Explore Human Sexuality in a World of Diversity (6th Canadian Edition) by Janice Baldwin. Updated with fresh Canadian research, this eBook celebrates sexual diversity and promotes critical thinking and sexual health. ISBN: 978-0135166406. Perfect for understanding sexuality in today’s Canada. #HumanSexuality #CanadianEdition  https://textbooks.dad/product/human-sexuality-in-a-world-o...
https://textbooks.dad/product/human-sexuality-in-a-world-of-diversity-6th-canadian-edition-ebook/?fsp_sid=1293

Turns out the class that was interrupted was taught by Professor Nicole McNichols who happens to be well known on social media for talking about human sexuality and ALSO being harassed by fascist.

So it certainly seems like the incel nazis or whatever flavor of the week launtic we got today doesn't want you to read about sex 🤦🏿‍♂️

Follow her work below 👇🏿

https://nicolethesexprofessor.com
https://www.instagram.com/nicole_thesexprofessor
https://www.tiktok.com/@nicole_thesexprofessor

#UW #TheSexProfessor #HumanSexuality #Seattle #PNW

https://www.newharbinger.com/9781648484193/the-trans-and-gender-diverse-teen-resilience-guide/ The Trans and Gender Diverse Teen Resilience Guide Essential Skills for Building Community, Well-Being, and Mental Health #mentalhealth #humansexuality #gender #teen #trans #genderidentity

Spotlight: 7 Most Common Sexual Fantasies https://psychedelicmentalhealth.net/spotlight-7-most-common-sexual-fantasies/ #sexuality #sexeducation #kink #fantasy #humansexuality #mentalhealth #sexaddiction

University of Nevada Las Vegas: UNLV Libraries Acquire Groundbreaking Sex Work Activism Archive. “The Norma Jean Almodovar Papers, covering the years 1918 to 2022, document her decades of advocacy for sex worker rights and include materials from her personal life, activism, and the nonprofit she founded: the International Sex Worker Foundation for Art, Culture, and Education (ISWFACE).”

https://rbfirehose.com/2025/08/16/university-of-nevada-las-vegas-unlv-libraries-acquire-groundbreaking-sex-work-activism-archive/

https://psychedelicmentalhealth.net/sex-therapy/ #sextherapist #sextherapy #masturbation #sexaddiction #porn #pornaddiction #genderidentity #conversiontherapy #lgbt #queer #mentalhealth #sexology #clinicalsexologist #psychedelic #sexuality #humansexuality #religioustrauma #seculartherapy #poly #consensualnonmonogamy #multiamory #polyamory #infidelity #bettydodson #ethicalslut

https://www.psychologytoday.com/us/blog/women-who-stray/201808/science-stopped-believing-in-porn-addiction-you-should-too #porn #pornaddiction #sexaddiction #erotica #humansexuality #sextherapy

https://www.youtube.com/watch?v=tEieuTWVL4E Affirmations inspired by the book "THE ETHICAL SLUT" - Janet W. Hardy & Dossie Easton #ethicalslut #affirmations #humansexuality

Masturbation Trajectories from Late Adolescence into Mid-Adulthood: A Population-Based Longitudinal Study https://flip.it/Zs415A #masturbation #sex #humansexuality #mentalhealth

https://www.alojapan.com/1253034/social-media-helps-fuel-growing-sex-tourism-in-japan-national-4/ Social media helps fuel growing ‘sex tourism’ in Japan | National #CostOfLiving #HumanReproduction #HumanSexuality #Japan #JapanTourism #kabukicho #MammalianSexuality #partners/afp #prostitution #SexAndTheLaw #SexualConsent #SexualEthics #sexuality #SocialEthics #SocialIssues #tourism #women; State AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMa…

https://www.alojapan.com/1252436/social-media-helps-fuel-growing-sex-tourism-in-japan-national-3/ Social media helps fuel growing ‘sex tourism’ in Japan | National #CostOfLiving #HumanReproduction #HumanSexuality #Japan #JapanTourism #kabukicho #MammalianSexuality #partners/afp #prostitution #SexAndTheLaw #SexualConsent #SexualEthics #sexuality #SocialEthics #SocialIssues #tourism #women; State AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMa…

https://www.alojapan.com/1252364/social-media-helps-fuel-growing-sex-tourism-in-japan-news/ Social media helps fuel growing ‘sex tourism’ in Japan | News #CostOfLiving #HumanReproduction #HumanSexuality #Japan #JapanTourism #kabukicho #MammalianSexuality #partners/afp #prostitution #SexAndTheLaw #SexualConsent #SexualEthics #sexuality #SocialEthics #SocialIssues #tourism #women; State AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineM…

https://www.alojapan.com/1252098/social-media-helps-fuel-growing-sex-tourism-in-japan-national/ Social media helps fuel growing ‘sex tourism’ in Japan | National #CostOfLiving #HumanReproduction #HumanSexuality #Japan #JapanTourism #kabukicho #MammalianSexuality #partners/afp #prostitution #SexAndTheLaw #SexualConsent #SexualEthics #sexuality #SocialEthics #SocialIssues #tourism #women; State AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMa…

*Bioscience article gets pretty weird when those "Krause corpuscles" eventually show up. #humansexuality #dedicatednerves #abusepotential www.quantamagazine.org/touch-our-mo...

Touch, Our Most Complex Sense,...

https://psychedelicmentalhealth.net/spotlight-encyclopedia-britannica-6-cultures-that-recognize-more-than-two-genders/ -- Encyclopedia Britannica -- 6 Cultures That Recognize More than Two Genders #humansexuality #gender

BBC: Kink and LGBT dating apps exposed 1.5m private user images online. “Researchers have discovered nearly 1.5 million pictures from specialist dating apps – many of which are explicit – being stored online without password protection, leaving them vulnerable to hackers and extortionists. Anyone with the link was able to view the private photos from five platforms developed by M.A.D […]

https://rbfirehose.com/2025/03/30/bbc-kink-and-lgbt-dating-apps-exposed-1-5m-private-user-images-online/

February 2025 Training Log

February Chart:

Notes:

• Thumb is used as a spacer on KM to keep track of reps since I can’t fully close it yet. 
• On set 4, I could not close the KM and feel pressure on the top of my thumb and thus failed at 20/21 reps
• On sets 1-3, I stopped at 30 reps
• If I’m not failing until set 4 with 30 reps per set, theoretically I should be able to close the KM fully for like 5 reps on the first set or something like that so I do wonder if perhaps my anatomy is why I can’t fully close the KM at all or if fully closing it is actually too far above my 1RM and the level 2 on KM is like a 0RM for me and I just can’t deload the KM for a half step between levels 1 & 2 because the load increments for Kegels are just too small for there to be a half step
• Perhaps 5-8 sets would produce more “pump”

2/4/25

Kinda just messing around today. 

After workout pump feeling was gone today so I thought I’d train again but def feel less strong than yesterday so maybe a full 24 hour rest would be ideal? Idk. 

I did Perifit today too. 

• Also, this is important- it confirms my theory from yesterday. 800g is 1.76lbs. And I am no where near 800g on Perifit. I’m more like 300g (0.66lbs) on Perifit. So by that logic, which it all checks out, I won’t be able to close level 2 on KM until I can at least do 800g for 10 reps in the moving out game on Perifit. So I think I may train in Perifit practice mode until I get to 800g and then train with KM. 
• It took me 7 months in 2022/23 to go from the 200s to 485g in Perifit. I’m hoping that with proper diet and better training, I will be able to get back there faster. That was back when I was overcalibrating the device and it wouldn’t automatically lower it and I just played the games for 20 mins a day. I think my routine will be better now.  

I think I’ll be doing Perifit 5 days a week, 5-6 sets per day, 20-30 reps per set. 

The main challenge right now is consistent rep “weight” meaning I need to monitor in Perifit practice mode the grams of strength I exert for each rep which is kinda annoying bc it doesn’t stay static or it doesn’t maintain a threshold for each rep. 

Like I wish in practice mode there was an option to set a beep to go off when a contraction reached a certain weight threshold. For now I have to just visually monitor the weight while also counting reps. It’s easy enough but still it could be more convenient. 

There’s also the matter of my 1RM vs 20-30RM for Perifit. They say that pelvic floor muscles tire quickly and I think that what they mean is, you can’t do your 1RM over and over again in a workout which no duh. Judging by today’s workout I would say my 20-30RM is somewhere in the 175-210g range and the 1RM is probably like 300g? Idk. 

Also I think I’m going to need to train standing up with my underwear and towel simply to standardize technique and boost progress. I was also training standing up back in 2022/23. Lying down induces the variable of pelvic tilt more so than standing does. Not that pelvic tilt can’t happen when standing but it’s less of a problem for influencing the weight number when standing since my hips aren’t pressing into the floor when tilted. And standing makes me work against gravity which is a plus. It adds more resistance so no matter the numbers I’ll be getting more out of the workout. 

I also wish they let me choose certain contraction patterns for the games like a customized game with only the contraction patterns I want to us but oh well. Once I break 800g and I can move onto my Kegelmaster it’ll be smooth sailing. 

2/17/25

• Milestone: calibrated Perifit after warm up games to 402g. Perfect because yesterday I did my work out with 240g which is 60% of 400g (1 RM) so perfect for my rep range of 20-30 reps. 
• So good! Because I could not have rep’d 400g at the start of the month. Clearly I am getting stronger! This 20-30 reps for 4 sets at 60% of 1RM program is working! 
• Todays workout has lower reps. I’m going to assume because I did not rest a full day in between and my recovery curve is at least longer than 16 hours. 
• Also, 250g for 4×30 would have been 1RM of 417g so maybe I’m just not there yet? Idk. I’ll have to rest tomorrow. 
• Oh and I haven’t been stretching. I am today. 
• And just a side note: my 1 RM Perifit rn is 402g so working strength 60% 1RM is 240g for 20-30 reps.
  • When my working strength is 800g/ 1.76 lbs (KM level 2), my 1RM will be 1,333g/ 2.94lbs (KM level 4). 
  • 1Rm for 75% of KM level 2 for 10 reps would be 1,066g. So once I can 1RM that much and rep 640g for 20-30 reps on Perifit, I can use KM on level 2! Yay! 
• So assuming I work out every other day for 24 days a month, that’s 12 workouts a month and assuming linear progress (which I know is not always the case) where I add 10g to my working strength every workout, it should take 3.33 months for me to go to 240g working strength to 640g working strength and be able to use my KM on level 2. Let’s say 4 months. Which is June. Worst case scenario is it takes 5-6 months. Which is July- August. So just in time for hot girl summer and Autumn cuffing season. Lol I joke. But once I can use the KM for reps, then not only will I have made lots of progress, but it’ll also be exponentially more progress from there bc KM is actually resistive. So the training will be more effective. 

#adultSexEd #adultsexed #exercise #femaleEmpowerment #fitness #girlTalk #health #humanSexuality #kegel #kegelQueen #kegelmaster #pelvicFloorHealth #pelvicFloor #Perifit #sex #sexEd #sexEducation #sexed #sexualEducation #sexualHealth #sexualWellness #sexualhealth #sexuality #strengthTraining #vaginacise #vaginalBodybuilding #vaginalWeightlifting #womensEmpowerment #womensHealth #workout #yoni

The Smart & Simple Strength Building Guide for your Vagina

This post is intended to clarify and also summarize the points I was trying to make in my super long post about optimizing training of the pelvic floor for hypertrophy.

If anything said here doesn’t make sense, go ahead and read that other post or comment and ask. 🙂

Training the muscles of the pelvic floor and vagina to get stronger with Kegels is similar to training other muscles in the gym but also different and requires a slightly different approach.

The closest form of “normal” gym training to Kegel training is grip training. Grip training is when hand grippers are used to provide resistance to strengthen the hands and forearms.

For hand grip training, the most well known brand of grip trainers is Captains of Crush. For training your vagina, the Kegelmaster is basically a Captains of Crush gripper for your vagina.

Why is hand grip training similar to Kegel training?

There are 2 main reasons:

1. Low Amplitude- Both hand grip training and Kegel training have a relatively small amplitude compared to exercises like squats, deadlifts, and pull ups. This means that the movement itself is a smaller movement and it takes less time for you to travel through a full range of motion with the exercise.
2. Muscle lengths at maximum force production- Both hand grip training and Kegel training use spring loaded devices for resistance. When the spring is fully compressed, that is when the most force is being produced by the muscles. This is also when the muscles are contracted and at their shortest length. When the spring is not compressed, little to no force is required from the muscles and the muscles are at their longest length. (And even when other Kegel devices are used this point is still true.)

What does this means for training your vagina and getting stronger Kegels?

How many reps & sets are ideal for vaginal bodybuilding?

First, it means that higher reps are more ideal compared to the normal strength & hypertrophy rep recommendations given for other exercises.

10-20 reps for Kegels and hand grippers is like 5-10 reps on squats. And 20-30 reps for Kegels is like 10-20 reps on squats. This is because Kegels are a smaller movement compared to squats in terms of the physical distance the weight needs to travel.

Also, because of the way that grip trainers and the Kegelmaster device work, the muscles are facing the most resistance when they are in their contracted, shortened state and less when they are in their lengthened, stretched state.

This means that there is less muscular damage and mechanical tension going on than metabolic stress to grow the muscle. Exercises that focus on metabolic stress and getting a pump to grow muscle are best done in high rep sets.

So for grip training and Kegel training, the 10-20 and 20-30 rep ranges are more ideal. (This means about 75% or 60% of your 1RM for the 10-20 and 20-30 rep ranges respectively.)

It also means that it may be good to do 4-5 sets of Kegels compared to the common standard of 3 sets for exercises like squats in order to get higher volume and more time under tension.

How often should I train Kegels?

Secondly, it means training should happen more frequently compared to other exercises.

Exercises that focus on metabolic stress should be done more frequently than other types of exercises that cause more mechanical tension and muscles and damage. It’s just easier and faster to recover from the metabolic damage than it is to recover from mechanical tension or muscular damage.

Heavy squats (lots of muscular damage and mechanical tension) can be done as little as once or twice a week.

Grip training and especially kegel training for vaginal bodybuilding is best done every other day or every day up to 6 days a week, depending on personal recovery time needed between Kegel workouts.

How do I maximize muscle growth for pelvic floor strength training?

Because the pelvic floor cannot be maximally loaded with stretched muscle lengths for reps with a spring loaded device like the Kegelmaster, I would suggest that the way around this would be to perform overcoming isometric Kegels with a Kegelmaster on a level that is too high for you or with a speculum.

This would allow the vaginal muscles to exert maximum effort while being stretched and induce greater mechanical tensions and muscle tears for hypertrophy.

One could also perform half reps with a Kegelmaster on a level that is too difficult to close fully but can be closed partially. This would mean you are essentially performing lengthened partial Kegels.

However, these suggestions do not work the pelvic floor through a full range of motion. So they are nice additional variants to training but full range of motion for a muscle is ideal, especially when training for athletic performance such as when training to be able to perform Pompoir skills and particularly for Pompoir skills that involve the shortened partial range of motion such as the sucking movement.

What’s the best position to train in for Kegels?

There is no right or wrong position to train in as long as the lumbar spine is kept in a neutral position while training and is not in anterior or posterior pelvic tilt.

When training with a Perifit device or jade yoni egg, it is best to train seated or standing in order to have the pelvic floor work against gravity for a more effective workout with more resistance.

When training with the Kegelmaster, the device itself provides the resistance more so than gravity so Training lying down the the Kegelmaster is easiest, especially given the shape and positioning of the device.

Training the pelvic floor in a full range of motion while also maximizing the stretch in the muscles of the pelvic floor would mean training in a “happy baby” yoga position or a deep squat position (or seated on a low stool with hips opened into abduction if you can’t deep squat), or a child’s pose position while performing Kegels with the Kegelmaster, Perifit, or Kegel device of your choice.

Training in these stretched positions using full range of motion Kegels would be ideal since it gives the best of both worlds of full ROM (or as full as possible in the stretched position) and training the muscles while they’re stretched to create more muscle growth.

Plus, training in the happy baby position in particular mimics being in a sex position so you could say it’s a form of “functional training” that will prepare you for the real thing.

#adultSexEd #adultsexed #exercise #femaleEmpowerment #fitness #girlTalk #health #humanSexuality #intimacy #jadeEgg #kegel #kegelQueen #kegelmaster #pelvicFloorHealth #pelvicFloor #Perifit #sex #sexed #sexualEducation #sexualHealth #sexualWellness #sexualhealth #sexuality #vaginacise #vaginalBodybuilding #vaginalWeightlifting #womensEmpowerment #womensHealth #yoni #yoniEgg

Perifit Strength Grams vs. Kegelmaster Levels

By far my most popular post on here has been my post with a chart of the Kegelmaster levels.

That post simply shows the various weights for each level of the Kegelmaster in pounds and grams.

However, I think some people may be wondering how the grams of the Perifit device and app compares to the doing loaded resistance of the Kegelmaster.

I think it’s fair to wonder if the Perifit grams are accurate. After all, the grams number on Perifit is simply a calculated estimate based on whatever mathematical calculations the app is running.

The Kegelmaster by comparison uses metal springs to provide resistance. For something like the Kegelmaster, the pounds of pressure needed to fully compress the spring are going to remain constant and not depend on any calculations.

Even without the chart telling how many pounds each Kegelmaster level equates to, the force required to close the spring is going to remain the same. Just like weights at the gym are going to be the same weight and require the same strength regardless of if the numbers are on the plates or not.

As a reminder, here are the weights for Kegelmaster levels 1 & 2:

Level 1: One standard spring on Post 1; 1.00 lbs or 453.59g

Level 2: One standard spring on Post 2; 1.54 lbs or 698.53g

I have yet to be able to close the Kegelmaster on level 2 for even a single rep. And that would make sense because I’ve never broken 600g on the Perifit strength meter either.

As of today (2/20/25), my Kegel 1RM is at 402g and my all time 1RM from a couple years ago when I was training more was at 485g.

Also as of today, I’ve been training with my Perifit at 240g for 4 sets of 20-30 reps (90 seconds rest between sets). So 240g is my rep strength or working strength.

This makes perfect sense because about 60% of your 1RM is the “ideal” weight to train with for sets of 20-30 reps. And given that my 1RM is 402g and 60% of that is 240g, I’m right on target.

That being said, it also stands to reason that once my working strength on my Perifit device is 420g, and I’m doing 4×30 with 420g on Perifit, my 1RM on Perifit should be around 700g and I’ll be able to close my Kegelmaster on level 2 for 1 rep.

This also means that until I’m able to do a 1RM of 1,166g on Perifit, I won’t be able to complete 4×30 with level 2 of the Kegelmaster.

But these are all just estimates based on what I know so far.

The jury is still out on whether or not Perifit grams correlates to kegelmaster weight levels. I will update this post once I reach that strength level to say how closely Perifit strength compares to Kegelmaster strength and if my predictions were correct, as well as to comment on how long it took me to reach those strength levels.

#adultSexEd #adultsexed #exercise #femaleEmpowerment #fitness #girlTalk #health #humanSexuality #kegel #kegelQueen #kegelmaster #pelvicFloorHealth #pelvicFloor #Perifit #sex #sexEd #sexEducation #sexed #sexualEducation #sexualHealth #sexualWellness #sexualhealth #sexuality #vaginacise #vaginalBodybuilding #vaginalWeightlifting #womensEmpowerment #womensHealth #yoni

Conversation with Professor Justin Lehmiller on Sexology and Human Sexuality

Scott Douglas Jacobsen
In-Sight Publishing, Fort Langley, British Columbia, Canada

Correspondence: Scott Douglas Jacobsen (Email: scott.jacobsen2025@gmail.com)

Received: November 4, 2024
Accepted: N/A
Published: January 22, 2025

Abstract

This interview presents an in-depth conversation between Scott Douglas Jacobsen and Dr. Justin J. Lehmiller, a renowned social psychologist and Research Fellow at The Kinsey Institute. Dr. Lehmiller discusses his extensive research on human sexuality, including sexual fantasies, casual sex, consensual non-monogamy, and sexual health. The dialogue explores the evolution of sex education, highlighting the disparities in North American educational frameworks and contrasting them with progressive models like the Netherlands’ “Long Live Love” program. Dr. Lehmiller addresses common misconceptions about sexual behaviors and disorders, such as porn addiction and sex addiction, emphasizing the importance of scientific scrutiny over societal stereotypes. Additionally, the interview delves into the impact of social media on self-perception and sexual health, the challenges and dynamics of consensual non-monogamous relationships, and the ongoing stigmatization of sex research. The conversation underscores the necessity for comprehensive, evidence-based approaches to sexuality education and research to foster healthier and more informed societal attitudes toward human sexuality.

Keywords: Consensual Non-Monogamy, Human Sexuality, Long Live Love Program, Porn Addiction, Sex Addiction, Sex Education, Sexual Fantasies, Sexual Health, Sexual Psychology, Social Media Impact

Introduction

In this insightful interview conducted on January 20, 2025, Scott Douglas Jacobsen engages in a comprehensive discussion with Dr. Justin J. Lehmiller, a distinguished social psychologist and Research Fellow at The Kinsey Institute. Dr. Lehmiller is internationally recognized for his expertise in human sexuality, having authored influential textbooks and popular works such as “Tell Me What You Want” and “The Psychology of Human Sexuality.” His research encompasses a broad spectrum of topics, including sexual fantasies, casual sex, consensual non-monogamy, and sexual health, with publications featured in prominent outlets like Playboy, VICE, and USA Today. The conversation begins with Dr. Lehmiller’s personal journey into the field of sexuality research, highlighting his academic background and the pivotal moment that directed his focus toward integrating sexuality into the study of romantic relationships. The interview progresses to examine prevailing misconceptions about human sexuality, emphasizing the importance of scientific inquiry in debunking societal myths such as the incomplete understanding of the clitoris and the oversimplified notion that “opposites attract.” A significant portion of the dialogue addresses generational differences in sexual behaviors and relationship preferences, noting trends such as reduced sexual activity among younger adults juxtaposed with an increase in kinkier sexual practices. Dr. Lehmiller also explores the complexities of consensual non-monogamous relationships, discussing the challenges of navigating jealousy and societal stigma despite growing cultural acceptance and media representation. The interview further critiques the current state of sex education in North America, contrasting it with the Netherlands’ comprehensive “Long Live Love” program. Dr. Lehmiller advocates for age-appropriate, scientifically accurate sex education that evolves with developmental stages, arguing that such approaches are crucial for fostering healthy sexual attitudes and behaviors. Finally, the conversation delves into the role of social media in shaping perceptions of sexuality, the misconceptions surrounding sex and porn addiction, and the enduring stigmatization of sex research. Dr. Lehmiller emphasizes the need for evidence-based frameworks and increased funding to advance the understanding of human sexuality beyond prevailing negative narratives. This interview provides valuable insights into the multifaceted nature of human sexuality, the importance of robust sex education, and the ongoing challenges faced by researchers in the field. Dr. Lehmiller’s expertise offers a nuanced perspective on fostering healthier societal attitudes toward sexuality through informed research and comprehensive educational strategies.

Main Text (Interview)

Interviewer: Scott Douglas Jacobsen

Interviewee: Prof. Justin Lehmiller

Section 1: Personal Journey into Sexuality Research

Scott Douglas Jacobsen: Today, we are here with Dr. Justin Lehmiller. He is a social psychologist and research fellow at the Kinsey Institute at Indiana University. His work focuses on human sexuality, including sexual fantasies, casual sex, consensual non-monogamy, and sexual health. He is the author of Tell Me What You Want and The Psychology of Human Sexuality, a widely used textbook. Today, we’re going to discuss your expertise specifically. As a quick background question, what was the first clue that this topic would become an intriguing research area for you to pursue professionally in the long term?

Prof. Justin Lehmiller: Well, sexuality was not something I initially considered for my career until I was already in graduate school working on my PhD in social psychology. I went to Purdue University to study the psychology of romantic relationships. While there, I was assigned to teach a human sexuality course.

That was my first exposure to the world of sex research. I attended Catholic schools for much of my life, including middle school, my undergraduate studies, and my master’s program. Sex wasn’t a common topic of discussion in those environments, and I hadn’t taken any formal courses on it.

It wasn’t until I was assigned as a teaching assistant that I realized sexuality is an area scientists actively study. I learned how important it is and realized that here I was, studying to be a social psychologist focusing on romantic relationships, and nobody was talking about sex, which seemed strange. My goal became integrating sexuality research into my relationship research, and that has been the focus of my work ever since.

Over the years, my research has expanded to cover many different aspects of sexuality because there are many fascinating and vital questions in this field.

Section 2: Surprising Aspects of Human Sexuality

Jacobsen: What are some of the most surprising aspects of human sexuality—things that we think we know but, as laypeople, do not?

Lehmiller: There are many things we assume about sex that often don’t hold up under scientific scrutiny. For example, research on the clitoris revealed something surprising: it wasn’t until about 20 years ago that we finally mapped out the entire structure of this organ in the body. This is just one example of how much of what we think we know or take for granted about human sexuality can be incomplete or incorrect until it is examined scientifically.

Another example is the popular belief that “opposites attract.” While there is some truth to the idea that having a partner with some differences can be exciting, research shows that most people prefer similar partners. Shared values foster a sense of safety, understanding, and acceptance. When discussing conventional beliefs like “opposites attract,” the reality is often more complex once we delve into the research.

Section 3: Generational Differences in Sexual Behaviors and Relationship Preferences

Jacobsen: Demographers also tend to analyze different generational cohorts, such as Gen Z, millennials, boomers, and Gen X, to better understand these dynamics. What are some of the differences you find in those cohorts, demographically, in terms of their sexual behaviours and relationship preferences?

Lehmiller: There are many differences across generations, and one of them is that there are differences in sexual activity levels. For example, younger adults are less sexually active today compared to previous generations. They are having less sex with fewer partners. However, the type of sex they are engaging in tends to be kinkier compared to generations past.

So, less sex but more kink for younger adults. Another aspect I’ve looked at in my work is how sexual fantasies differ at different stages of life. This is an area that had not been previously explored because most published studies on sexual fantasies are based on college students and young adults. These samples might not necessarily represent the broader population when it comes to what we fantasize about or think about regarding sex.

One of the findings is that younger adults, in addition to having more kinky fantasies than older adults, also have more fantasies about romance, passion, and connection. By contrast, when examining midlife adults, they tend to have more fantasies involving sex with multiple partners, novelty and excitement, and taboo activities. This reflects the developmental time course of sexual fantasies, where they evolve and adapt over time to meet specific needs during different life stages.

Many younger adults, especially those today, have not had significant relationship experiences yet. Young adults are living in an era of delayed adulthood, where traditional milestones are being pushed back, such as waiting longer to have sex for the first time, entering serious, committed relationships, or getting married. This is reflected in their fantasies, which often focus more on passion, romance, intimacy, and connection.

Older adults, many of whom have been in long-term monogamous relationships for extended periods, often feel a need to break out of their routines and explore something new and different. We know that people tend to grow bored with sexual routines, so exploring sexuality and relationships at various phases of life or through different generational lenses is valuable. Sexuality constantly evolves and changes throughout our lives.

Section 4: Gender Differences in Sexual Fantasies

Jacobsen: What are some of the noteworthy similarities and differences, gender-wise, in terms of sex or sexual fantasies?

Lehmiller: In terms of sexual fantasies and sexual preferences, I would preface this by saying there are many differences across genders, but there are also numerous similarities. Ultimately, we are more similar than different when looking at the content of sexual fantasies. Most of the things men fantasize about, women also fantasize about, and vice versa. However, some key differences do exist.

For instance, men are more likely than women to frequently fantasize about sex with multiple partners or engage in taboo or forbidden activities—things they are not supposed to do.

By contrast, women, compared to men, have more fantasies about passion, romance, and intimacy—fantasies that meet deeper needs for emotional connection. However, women also report more fantasies involving kink and BDSM than men do. It’s important to note that men also fantasize about passion and romance; most have done so at some point.

Most men have also fantasized about kink, just as most women have fantasized about multiple partners and taboo activities. But when looking at the frequency of these fantasies, significant differences emerge across genders.

Section 5: Lifespan Changes in Sexuality

Jacobsen: What about across the arc of the lifespan? How do people adapt to physiological changes, energy levels, and shifts in their self-perception and sexuality over time? What are some of the changes that occur over that arc you mentioned earlier?

Lehmiller: Sexuality changes in many ways as we age. Starting with physiological or physical changes, we know that as people get older, they are more likely to develop chronic health conditions, sexual dysfunctions, and other difficulties. That’s not to say that young adults can’t experience these issues—many do—but overall health status typically changes as we age, which can impact our sex lives.

For instance, chronic illnesses or certain disabilities can make specific sexual activities more challenging, less comfortable, or less pleasurable. They can also lead to changes in sexual function. For example, someone with cardiovascular issues might encounter arousal problems, such as erectile difficulties or issues with vaginal lubrication.

In addition, for women, menopause and the subsequent abrupt reduction in sex hormone production can significantly affect sexual functioning and pleasure. So, there are numerous physical changes over time that we need to adapt to. Unfortunately, the only sex education most of us receive, if we’re lucky enough to get any, occurs during adolescence. In reality, we need sex education tailored to our current stage of life. Hence, we understand how our bodies are functioning at that time. But it’s not just the physical changes we experience.

Psychologically, our desires and needs also evolve. For example, when looking at sexuality among older adults, one key factor in maintaining sexual satisfaction is having a flexible definition of sex that evolves. Seniors who maintain a strict definition of sex as solely penetration often experience more declines in sexual satisfaction. By contrast, older adults who adopt a broader view of sex—seeing it as a form of intimacy that includes a range of activities—tend to experience fewer decreases in satisfaction and, in some cases, report increases.

So, to maintain sexual satisfaction as we age, we need to adapt both physically and psychologically, changing the way we approach and think about sex.

Then, of course, on top of all of this, we also experience changes in our relationships over time. These changes can create certain sexual issues and difficulties as well. I like to think of sex as a biopsychosocial phenomenon. You have the biological and physiological factors that impact our sexuality, the psychological factors such as personality traits and characteristics, and the social and environmental factors, including our relationships and cultural context. All these elements interact and influence our sexuality.

To talk about maintaining sexual health and satisfaction, we need to consider all of these factors. We can’t focus solely on one aspect; we need to look at them within this interconnected, broader context.

Section 6: Impact of Social Media on Sexuality

Jacobsen: One major change in recent years has been the rise of social media and communication technologies. How do these impact people’s self-perception, conceptions of healthy sexuality, and overall experiences? Are these significant factors or just pervasive without much impact?

Lehmiller: As part of the biopsychosocial model I mentioned, social media falls into the social category. It is indeed a significant factor that can influence our sexuality. One way social media impacts us is that many people use it to learn and find answers to their questions. Traditional sex education often doesn’t cover everything people need to know, so more and more individuals turn to the internet and social media to fill those gaps.

On social media, numerous influencers and content creators post about sex and relationships regularly. As a sex educator, I try to post educational, science-based content that provides responsible and hopefully helpful information. However, there is also much misinformation circulating online. People sometimes post content not backed by science, leading to widespread misconceptions.

A good example of this is the annual online challenge called “No Nut November,” where men encourage each other to abstain from masturbation, porn, sex, and orgasm for the entire month. The stated goal of this challenge is often to boost testosterone. There’s a popular notion on social media that men should practice semen retention to increase testosterone and enhance vitality.

And the reality is that no science or data supports those claims. This is where social media can become dangerous as a source for learning about sex because so much of the information available is not scientifically based. People must be cautious about whom they follow and what content they engage with online. Before making significant changes to your sex life or intimate life, you should vet the information to ensure its credibility and accuracy. That’s one-way social media can impact our sexuality—by shaping what we learn and think about it.

But there are many other ways as well. Increasingly, social media is influencing our dating lives. People often post details of their dates online, sometimes leading to what I would call “performative dating,” where the focus shifts to doing things for followers, likes, and comments rather than cultivating authentic human connections. This can create distorted views of what healthy sexual and romantic relationships look like because we’re exposed to a curated, selectively edited version of reality. This selective presentation raises our comparison standards and can make us feel inadequate as if we’re not measuring up to others who seem to have perfect dates and relationships. We must see the conflicts, difficulties, and challenges behind the scenes.

So, yes, there are many ways in which social media can influence our sex lives and relationships.

Section 7: Claims about Porn Addiction and Sex Addiction

Jacobsen: Many people have heard claims about disorders such as porn addiction or sex addiction. Is there any data that supports these claims?

Lehmiller: Sex and porn addiction are frequently discussed topics on social media, often surrounded by misinformation. First and foremost, there is no formal clinical diagnosis of sex addiction or porn addiction. If you look in the DSM, the “psychiatry Bible,” you won’t find these conditions listed. These are contentious concepts within the field of sex therapy and, more broadly, in psychology and psychiatry.

My view, after extensively reviewing the literature, is that some people do struggle to regulate their sexual behaviour or porn use and may experience negative impacts. However, this is relatively uncommon. It’s not as pervasive as popular media might suggest. Most people, when surveyed, report that pornography has no negative effects on them, or even positive effects.

For the minority who do experience negative impacts from porn use, the data often points to moral conflicts as the primary cause. They may engage in behaviours like watching porn or masturbating but feel that these actions go against their moral or personal values. This creates a state of dissonance—an uncomfortable discrepancy between values and behaviour—that people naturally seek to resolve. Many who experience this dissonance may label themselves as “porn addicts” or “sex addicts,” as framing it as an addiction shifts the blame from themselves to a perceived disease.

In some ways, identifying with that label can act as a self-protective factor, explaining the discomfort stemming from their behaviour and values being misaligned.

This is one of those controversial concepts, but it’s not just about moral conflicts. For some people, there are compulsive urges to engage in sexual behaviour, which could include pornography use or partnered sexual activities. These compulsions may be linked to underlying mood disorders or conditions such as obsessive-compulsive disorder (OCD). So, yes, there can be compulsive reasons for engaging in certain sexual behaviours, but this is distinct from the concept of addiction. The evidence doesn’t align with the idea of addiction.

For example, when considering addiction, one key characteristic is the development of tolerance—needing more and more of the behaviour or substance to achieve the same level of satisfaction. Data does not support the idea that pornography use leads to a buildup of tolerance over time. Many aspects of compulsive behaviour do not match up with the addiction model, and a compulsive disorder explanation often makes more sense in these cases. Thus, I believe it’s more accurate to frame these issues as involving moral conflicts or compulsive behaviour rather than addiction.

Section 8: North American Sex Education Systems

Jacobsen: Regarding current educational models or knowledge frameworks, what are North American systems getting right and wrong about healthy sexuality, sexual desires, sexual behaviours, and sexual psychology, especially in the K-12 education system?

Lehmiller: In the United States, sex education is a patchwork of laws. Not every state even requires sex education for adolescents. Currently, only 29 states mandate sex education for adolescents, leaving a significant number of states where it isn’t required at all. Even among the states where it is mandated, only about 15 require the education provided to be medically accurate. This is astonishing because it means there are over a dozen states where students are taught sex ed that does not need to be factual or useful—it could be anything.

This is where we struggle: there is no consistent framework in place to ensure high-quality sex education is delivered. Most sex education happens at the local level, determined by local school boards and often influenced by parents and community opinions, which can lead to varied and sometimes inadequate sex education. The lack of uniform standards is one of the biggest issues, as it leads to a disparity in the quality and comprehensiveness of sex education across the country.

The way that most sex education works in the U.S. is at the local level, where local school boards determine what should be taught, often with input from parents, PTA boards, and other community stakeholders. Many of the people who are most vocal about sex education are those who are against it being taught in the first place. This is why abstinence-based sex education remains prevalent in the U.S. There are areas where comprehensive sex education is offered. Many of these programs do quite well. However, many students still receive education that needs to be more comprehensive.

When considering effective models for teaching younger adults and adolescents about sex, we need to look at what other countries are doing. I include this in my study abroad courses for sex therapists, researchers, and educators. We visit other countries and speak with local sex educators to understand their approaches and what we can learn from them. My favourite program is in the Netherlands. They have a program called Long Live Love, which is used in most Dutch schools.

It’s a program that begins in kindergarten, adding new components as children progress through their education. I know some people might be taken aback when they hear “sex ed for kindergartners” and wonder what that entails. It doesn’t involve teaching young children about intercourse or explicit content. Instead, it focuses on teaching them the names of their body parts and developing communication skills. For example, children learn how to communicate about things like good and bad touch and how to express their boundaries.

This approach lays the foundation for improved communication skills from an early age. Teaching kids the proper names for their body parts is crucial for safety. If a child experiences sexual assault, being able to report what happened accurately is essential. Providing them the language to communicate with parents or trusted adults can help keep them safer. The Dutch program is age-appropriate and evolves to provide the necessary knowledge at different developmental stages.

As children grow, the curriculum focuses on puberty and bodily changes. Beyond that, it covers what they need to know about sex, staying safe, and forming healthy relationships. One often-missing element in sex education is the relationship component. Sexual activity always occurs within some relational context, so separating discussions of sex and relationships is unhelpful. This ties back to my earlier point that relationship researchers often overlook sex, while many sex researchers don’t focus on relationships. We need to discuss both together to some extent.

I highly recommend the Long Live Love program in the Netherlands. We could learn much from it to improve our programs, which need to be improved in many ways.

Section 9: Consensual Non-Monogamy

Jacobsen: Let’s shift to consensual non-monogamy. These relationships can come with challenges, such as jealousy and societal stigma. How do individuals navigate those relationships, and how is the cultural context of these relationships evolving?

Lehmiller: Consensual non-monogamy involves relationships where people have more than one sexual or romantic partner at the same time, with everyone’s consent. These relationships are on the rise, and interest in them is increasing. For instance, Google searches related to polyamory and open relationships have been on the rise over the last 10 to 20 years.

We also see increased media depictions of people in non-monogamous relationships, leading to greater cultural recognition and awareness compared to the past. While these relationships are often portrayed as more evolved or progressive, some people talk about how jealousy doesn’t exist. Partners enjoy each other’s happiness; that is not the whole story. Many individuals in polyamorous or consensually non-monogamous relationships still face challenges, and jealousy can and does arise in these relationships.

Navigating consensual non-monogamy can be difficult because many people don’t have a clear framework or template for how these relationships should function. Those who open their relationships often don’t know what ground rules and boundaries should be discussed and established up front, which can lead to complications. Some people think that opening up a relationship will solve existing sexual issues. Still, they may find that it introduces a new set of challenges.

Consensual non-monogamous relationships can work, and when comparing monogamous and non-monogamous relationships, satisfaction levels are often similar. Either type of relationship can be fulfilling, but each comes with its own unique set of issues. Entering a consensually non-monogamous relationship means trading in for different challenges that need to be navigated with your partner. Reading guidebooks and resources can be helpful for those considering opening up their relationship. For example, books like Opening Up, More Than Two, and The Ethical Slut are valuable resources for understanding potential issues and learning how to navigate these relationships healthily.

Section 10: Societal Stereotypes and Misconceptions in Sex Research

Jacobsen: As social conversations about sexuality and sexual satisfaction evolve, how are people who are more exploratory still stereotyped? How is sex research itself stereotyped, and what misconceptions persist in the public eye?

Lehmiller: It’s interesting to see how societal attitudes have shifted. Over the past few decades, society has become more sex-positive in many ways. For example, public opinion polls in the U.S. and many Western countries show increasing acceptance of people who are not heterosexual, sex outside of marriage, divorce, and having children outside of marriage. By many measures, we are more accepting than we were in the past.

However, sex negativity still exists. Sexual double standards persist, with women often judged more harshly than men for exploring their sexuality. Slut-shaming, though more recognized now than before, still happens despite efforts to reduce it. This reflects how society continues to stereotype people who are more sexually exploratory.

Sex research, too, is often stereotyped or misunderstood. Historically, it has been controversial. Dr. Alfred Kinsey’s research in the 1940s and 1950s was met with intense backlash, and to this day, sex research remains contentious. This makes it difficult for researchers to secure funding, as the U.S. government is hesitant to fund studies that don’t focus on negative aspects of sex, such as STIs or teen pregnancy. This reluctance extends to research on positive aspects of sex, like pleasure or fantasies, which often face significant challenges in obtaining financial support. The field is challenging due to the lack of broad acceptance and limited funding for crucial research.

Section 11: Public Perception of Sex Research

Jacobsen: How does the general public view sex research?

Lehmiller: Sex research has always been controversial. If you go back to the pioneering work of Dr. Alfred Kinsey in the 1940s and 1950s, it generated explosive controversy. Even today, sex research remains a contentious topic within the public eye, making it difficult for sex researchers to secure funding for their work. In the U.S., obtaining funds for sexuality research is challenging. Researchers often need to rely on private organizations rather than government grants because the U.S. government is hesitant to fund research in the realm of sexuality that does not focus on negative aspects, such as STIs or teen pregnancy prevention.

This extends to areas like sexual pleasure or fantasies, which rarely receive government funding. As a result, the field can be difficult to work in, lacking widespread acceptance, and often facing financial obstacles when conducting meaningful research.

Jacobsen: Thank you very much for your insights today. I appreciate it.

Lehmiller: Thanks so much for having me.

Discussion

The interview between Scott Douglas Jacobsen and Dr. Justin J. Lehmiller offers a nuanced examination of human sexuality, highlighting the intricate interplay between individual behaviors, societal norms, and educational frameworks. Dr. Lehmiller’s insights challenge prevalent misconceptions, such as the underappreciation of the clitoris in human sexuality and the oversimplified notion that “opposites attract.” By grounding these discussions in empirical research, the interview underscores the importance of scientific inquiry in debunking myths and fostering a more accurate understanding of sexual health and behaviors. One of the significant themes explored is the generational shift in sexual behaviors and relationship preferences. Dr. Lehmiller highlights that younger adults today are experiencing delayed adulthood, resulting in fewer sexual partners but a greater inclination towards kinkier sexual practices. This shift may reflect broader cultural and societal changes, including the impact of technology and social media on personal relationships and sexual expression. The discussion on consensual non-monogamy further illuminates how evolving relationship structures require new frameworks and resources to navigate challenges like jealousy and societal stigma effectively.

The critique of North American sex education systems, contrasted with the Netherlands’ “Long Live Love” program, underscores the disparities in how different cultures approach sexual education. Dr. Lehmiller advocates for comprehensive, age-appropriate sex education that evolves with developmental stages, emphasizing the importance of communication skills and accurate knowledge from an early age. This perspective aligns with existing literature that emphasizes the role of education in shaping sexual health and satisfaction. Additionally, the interview delves into the role of social media in shaping perceptions of sexuality. While social media platforms offer opportunities for education and connection, they also pose risks through the spread of misinformation and the promotion of unrealistic standards. Dr. Lehmiller’s discussion of “performative dating” and challenges like “No Nut November” illustrates the complex ways in which social media influences individual self-perception and relationship dynamics.

Furthermore, the exploration of concepts like porn addiction and sex addiction reveals the complexities and controversies within the field of sexual psychology. Dr. Lehmiller challenges the validity of these addiction models, arguing that many reported cases are better understood through the lens of moral conflicts or compulsive behaviors rather than true addiction. This perspective calls for a more nuanced approach to addressing problematic sexual behaviors, one that considers underlying psychological factors and personal values. Overall, the interview emphasizes the necessity for ongoing research and improved educational frameworks to foster a more informed and accepting societal attitude towards human sexuality. Dr. Lehmiller’s expertise highlights the interplay between biological, psychological, and social factors in shaping sexual health and behaviors, advocating for policies and educational programs that reflect the complexity and variability of sexual experiences across different life stages and cultural contexts.

Methods

The interview with Dr. Justin J. Lehmiller was conducted on November 4, 2024, and subsequently published on January 22, 2025. A semi-structured interview format was employed to facilitate an in-depth exploration of Dr. Lehmiller’s expertise in human sexuality. This approach allowed for both guided questions and open-ended responses, enabling a comprehensive discussion of various topics such as sexual fantasies, consensual non-monogamy, sex education, and the impact of social media on sexuality. The interview was recorded with the consent of both parties to ensure accuracy in transcription. Following the interview, the recording was meticulously transcribed verbatim and organized into thematic sections based on the subjects covered. This organization ensured clarity and coherence, allowing readers to navigate the complex topics discussed seamlessly. The structured methodology of this interview aimed to provide a holistic understanding of human sexuality by addressing both biological and psychosocial factors. By focusing on Dr. Lehmiller’s extensive research and practical experiences, the interview seeks to bridge the gap between academic theories and real-world applications in the field of sexual psychology.

Data Availability

No datasets were generated or analyzed during the current article. All interview content remains the intellectual property of the interviewer and interviewee.

References

(No external academic sources were cited for this interview.)

Journal & Article Details

• Publisher: In-Sight Publishing
• Publisher Founding: March 1, 2014
• Web Domain: http://www.in-sightpublishing.com
• Location: Fort Langley, Township of Langley, British Columbia, Canada
• Journal: In-Sight: Interviews
• Journal Founding: August 2, 2012
• Frequency: Four Times Per Year
• Review Status: Non-Peer-Reviewed
• Access: Electronic/Digital & Open Access
• Fees: None (Free)
• Volume Numbering: 13
• Issue Numbering: 2
• Section: A
• Theme Type: Idea
• Theme Premise: “Outliers and Outsiders”
• Theme Part: 33
• Formal Sub-Theme: None
• Individual Publication Date: January 22, 2025
• Issue Publication Date: April 1, 2025
• Author(s): Scott Douglas Jacobsen
• Word Count: 3,861
• Image Credits: Photo by Sushil Nash on Unsplash
• ISSN (International Standard Serial Number): 2369-6885

Acknowledgements

The author thanks Prof. Lehmiller for his time and willingness to participate in this interview.

Author Contributions

S.D.J. conceived and conducted the interview, transcribed and edited the conversation, and prepared the manuscript.

Competing Interests

The author declares no competing interests.

License & Copyright

In-Sight Publishing by Scott Douglas Jacobsen is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
© Scott Douglas Jacobsen and In-Sight Publishing 2012–Present.

Unauthorized use or duplication of material without express permission from Scott Douglas Jacobsen is strictly prohibited. Excerpts and links must use full credit to Scott Douglas Jacobsen and In-Sight Publishing with direction to the original content.

Supplementary Information

Below are various citation formats for Conversation with Professor Justin Lehmiller on Sexology and Human Sexuality.

1. American Medical Association (AMA 11th Edition)
   Jacobsen S. Conversation with Professor Justin Lehmiller on Sexology and Human Sexuality. January 2025;13(2). http://www.in-sightpublishing.com/lehmiller
2. American Psychological Association (APA 7th Edition)
   Jacobsen, S. (2025, January 22). Conversation with Professor Justin Lehmiller on Sexology and Human Sexuality. In-Sight Publishing. 13(2).
3. Brazilian National Standards (ABNT)
   JACOBSEN, S. Conversation with Professor Justin Lehmiller on Sexology and Human Sexuality. In-Sight: Interviews, Fort Langley, v. 13, n. 2, 2025.
4. Chicago/Turabian, Author-Date (17th Edition)
   Jacobsen, Scott. 2025. “Conversation with Professor Justin Lehmiller on Sexology and Human Sexuality.” In-Sight: Interviews 13 (2). http://www.in-sightpublishing.com/lehmiller.
5. Chicago/Turabian, Notes & Bibliography (17th Edition)
   Jacobsen, S. “Conversation with Professor Justin Lehmiller on Sexology and Human Sexuality.” In-Sight: Interviews 13, no. 2 (January 2025). http://www.in-sightpublishing.com/lehmiller.
6. Harvard
   Jacobsen, S. (2025) ‘Conversation with Professor Justin Lehmiller on Sexology and Human Sexuality’, In-Sight: Interviews, 13(2). http://www.in-sightpublishing.com/lehmiller.
7. Harvard (Australian)
   Jacobsen, S 2025, ‘Conversation with Professor Justin Lehmiller on Sexology and Human Sexuality’, In-Sight: Interviews, vol. 13, no. 2, http://www.in-sightpublishing.com/lehmiller.
8. Modern Language Association (MLA, 9th Edition)
   Jacobsen, Scott. “Conversation with Professor Justin Lehmiller on Sexology and Human Sexuality.” In-Sight: Interviews, vol. 13, no. 2, 2025, http://www.in-sightpublishing.com/lehmiller.
9. Vancouver/ICMJE
   Jacobsen S. Conversation with Professor Justin Lehmiller on Sexology and Human Sexuality [Internet]. 2025 Jan;13(2). Available from: http://www.in-sightpublishing.com/lehmiller

Note on Formatting

This layout follows an adapted Nature research-article structure, tailored for an interview format. Instead of Methods, Results, and Discussion, we present Interview transcripts and a concluding Discussion. This design helps maintain scholarly rigor while accommodating narrative content.

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