Nobody Taught You THIS About Sex | Bryan Johnson Podcast
Bryan Johnson
Aug 7, 2025
Episode description
My team looked into the biological effects of the more risky sexual behaviors. Here’s what we found.
Study Links:
Choking During Sex
Overnight Erections
Female Erection Cycles
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Hosts:
Bryan Johnson: Blueprint Founder
Kate Tolo: Blueprint Co-Founder
Dr. Mike Mallin: Lead Physician for Bryan Johnson
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Chapters
0:00 - Introduction
1:15 - Taboos Around Sex
4:50 - Sex is Good For You
8:33 - Choking During Sex
15:06 - Anilingus (Rimming)
22:20 - Sexual Preferences + Microbiome
25:25 - Erection Cycles: Male and Female
34:38 - Let’s Talk About Sex More
Mindsip insights from this episode:
Address erectile dysfunction to reduce heart attack and stroke risk
Men with erectile dysfunction have a 25-50% higher risk of a future heart attack, stroke, or all-cause mortality.
Recognize nighttime erections as vital health indicators
Nighttime erections are presented as a vital health sign as important as blood pressure, indicating your body's vascular, hormonal, and cardiovascular health.
Explore gut microbiome's influence on sexual preference and nutrient metabolism
A study found a correlation between a man's sexual role (insertive vs. receptive) and their gut microbiome, which in turn affected how their body metabolized nutrients.
Recognize women's nighttime arousal cycles for health insights
Women experience the same nighttime arousal cycles as men, which can be measured by elevated pH episodes (EPEs) and serve as a check on physiological health.
Recognize choking risks during sex linked to brain injury
Choking during sex has been linked to an increase in the S100B protein, a biological marker also associated with traumatic brain injuries.
Ejaculate 21 times monthly to lower prostate cancer risk
Men who ejaculate 21 or more times per month have a 20-35% reduction in their risk for prostate cancer.
Recognize UTI risk increase after intercourse
In young women, 75-90% of acute bladder infections occur within 24 hours of intercourse, with the odds of a UTI jumping 60 times within 48 hours after sex.
Measure nighttime erections with Adam Sensor device
The Adam Sensor is a device from a UK company that you can wear to measure the frequency and rigidity of your nighttime erections.
Avoid saunas to protect male fertility
Exposing testicles to high heat in a sauna can dramatically decrease male fertility markers.
