Why Don’t You Have Sex With Your Sister? - Dr Debra Lieberman - #1041
Modern Wisdom
01/03/26
•68m
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Dr. Debra Lieberman is an evolutionary psychologist, professor, and researcher.
Why don’t we feel sexual attraction toward our siblings or close family? Evolution seems to have hard-wired the brain to prevent inbreeding, a pattern shared with many other animals. So how does this mechanism work, and what are the moral or ethical arguments surrounding incest?
Expect to learn why evolution has designed you to not want sex with your sister, how animals actually detect who their relatives are, what the high level explanation is for why humans don’t want sex with their kin, the moral argument if it is okay if two adult siblings had consensual sex, how big the actual genetic risk is for first cousins, what crying adn tears actually communicate from an evolutionary perspective and much more...
Timestamps:
(0:00) Why Don’t We Want to Have Sex With Our Siblings? (7:57) What Triggers Our Incest Avoidance Mechanism? (19:04) Is Incest Disgust a Moral Pressure? (27:19) How Only Children Make Sense of Incest (31:11) Why Is Incest P**n So Popular? (37:19) Why Do We Cry? (52:53) What Happens When No One is Watching (58:07) Why We Use Tears to Convey Emotions (01:06:30) Where to Find Debra
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Extra Stuff:
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Episodes You Might Enjoy:
#577 - David Goggins - This Is How To Master Your Life: lnkfi.re/SN-Goggins
#712 - Dr Jordan Peterson - How To Destroy Your Negative Beliefs: lnkfi.re/SN-Peterson
#700 - Dr Andrew Huberman - The Secret Tools To Hack Your Brain: lnkfi.re/SN-Huberman
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Previous Episode
4M Subscriber Q&A - #1040
January 1
•90m
I hit 4 million Subscribers on YouTube!!
To celebrate, I asked for questions from YouTube, X, and Instagram, so here’s another 90ish minutes of me trying to answer as many as possible.
Expect to learn what’s new with my new haircut, how much longer until the new studio is built, if or when an Andrew Tate episode will be released, the most recurring thoughts I have when I feel sad and or disappointed sometimes, and why I think this occurs, the most favourite thing about myself, and much more...
Timestamps:
(0:00) Intro (0:32) What’s With the Haircut? (2:37) Are Alpha Males Misunderstood? (5:07) Best Question from Tour (7:59) Favourite Fiction Book (9:09) Update on the New Studio (10:28) Does Chris Feel Like He’s in His Prime? (12:22) Will the Andrew Tate Episode Be Released? (15:47) Chris’ Episode Prep Routine (18:29) What is the Podcast Sphere Missing? (23:11) Are More Fun, Chill Podcasts on the Cards in 2026? (25:22) Live Show in Newcastle (26:11) What Inspired the MW Merch? (28:11) The Meaning Behind the Red Bracelet (29:23) Has Chris Visited Iceland? (30:43) How Much Self-Discovery is There Left to Do? (34:33) What is the Minimum Level of Effort to Make Progress? (37:13) Remedies for Sadness and Disappointment (41:14) Health Journey Update (43:46) Chris’ Recurring Thoughts (46:55) How Ego and Success Work Together (49:42) Advice on Feeling Lost in Life (51:42) Is the Met/Met Gene an Advantage or Hinderance? (56:11) Would Chris Do University Again? (57:07) How Chris Would Improve Middlesbrough (59:50) Chris’ Favourite Personal Trait (01:02:04) The Reach of Modern Wisdom (01:04:04) Push Ups on Stage (01:04:24) Does Chris Get Jealous? (01:05:38) The Biggest Accomplishment of 2025 (01:06:47) Understanding External Perfectionism (01:11:29) Why are You Avoiding Things? (01:15:30) How to Stay Anchored in the Present (01:21:03) Knowing When You’ve Found True Love (01:24:42) Here’s to 2026
Sponsors:
See discounts for all the products I use and recommend: https://chriswillx.com/deals
Extra Stuff:
Get my free reading list of 100 books to read before you die: https://chriswillx.com/books
Try my productivity energy drink Neutonic: https://neutonic.com/modernwisdom
Episodes You Might Enjoy:
#577 - David Goggins - This Is How To Master Your Life: lnkfi.re/SN-Goggins
#712 - Dr Jordan Peterson - How To Destroy Your Negative Beliefs: lnkfi.re/SN-Peterson
#700 - Dr Andrew Huberman - The Secret Tools To Hack Your Brain: lnkfi.re/SN-Huberman
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Get In Touch:
Instagram: https://www.instagram.com/chriswillx
Twitter: https://www.twitter.com/chriswillx
YouTube: https://www.youtube.com/modernwisdompodcast
Email: https://chriswillx.com/contact
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Next Episode
Dr Andrew Huberman is a neuroscientist, Associate Professor at the Stanford University School of Medicine and a podcaster. There’s an overwhelming amount of information on how to level up your body and mind, and it can be difficult to know where the latest science truly stands. Thankfully, Dr. Andrew Huberman breaks down the research on habits, the brain, sleep, supplements, and his personal go-to protocols. Expect to learn why high cortisol isn’t actually a bad think to have a lot of, Andrew’s advice on how to overcome burnout, what the new science of better sleep would be, how to make and set better habits easier, what Andrew thinks of the new “protein in everything” trend, the next wave of supplements to take to optimise your life, Andrew’s take on religion and faith and much more...
Timestamps:
(0:00) How Cortisol Programs Our Day (9:22) Understanding Stress & Burnout (14:16) The Silent Cost of Sleep Debt (21:47) Breakthrough Secrets for Better Sleep (36:19) Should We Sleep With Our Head Raised? (51:44) The #1 Hack for Deep Focus (01:08:08) The Science of Spirituality (01:25:28) How Much Can We Control Our Internal World? (01:33:38) Why Understanding People Changes Everything (01:46:35) Healthy Media Habits (02:06:28) The Next Breakthrough Supplement (02:25:09) The Nutrient That Heals Your Second Brain (02:31:24) Hacking Your Mitochondrial DNA (02:39:55) Making Sense of Complex Health Issues (03:04:02) Andrew’s Upcoming Book
Sponsors:
See discounts for all the products I use and recommend: https://chriswillx.com/deals
Extra Stuff:
Get my free reading list of 100 books to read before you die: https://chriswillx.com/books
Try my productivity energy drink Neutonic: https://neutonic.com/modernwisdom
Episodes You Might Enjoy:
#577 - David Goggins - This Is How To Master Your Life: lnkfi.re/SN-Goggins
#712 - Dr Jordan Peterson - How To Destroy Your Negative Beliefs: lnkfi.re/SN-Peterson
#700 - Dr Andrew Huberman - The Secret Tools To Hack Your Brain: lnkfi.re/SN-Huberman
-
Get In Touch:
Instagram: https://www.instagram.com/chriswillx
Twitter: https://www.twitter.com/chriswillx
YouTube: https://www.youtube.com/modernwisdompodcast
Email: https://chriswillx.com/contact
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