
The Matt Walker Podcast
The Matt Walker Podcast is all about sleep, the brain, and the body. Matt is a Professor of Neuroscience at the University of California, Berkeley. He is the author of the book, Why We Sleep and has given a few TED talks. Matt is an awkward British nerd who adores science and the communication of science to the public.
The Matt Walker Podcast
#100 - Sleep As The Fountain Of (Facial) Youth
Matt delves into the science of "beauty sleep" this week, revealing it as somewhat of a scientific reality. He highlights research by Dr. Tina Sundelin, which demonstrates that sleep-deprived individuals are consistently perceived as less healthy, more fatigued, and less attractive. These visible changes are rooted in biological consequences like dilated under-eye blood vessels and elevated cortisol, a hormone that degrades vital skin collagen.
Matt then differentiates between expression wrinkles and a distinct second class, sleep wrinkles, which are caused by the mechanical compression of the face against a pillow. To mitigate their formation, he explains several evidence-based strategies. These include adjusting your sleep posture to your back, using silk or satin pillowcases to reduce friction, and maintaining skin hydration to improve its natural elasticity. The episode concludes with a powerful reminder that while these scientific interventions are effective, true attractiveness comes from within, encouraging a graceful embrace of the natural aging process.
Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.
One of our sponsors this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. And now their new Lemonade Salt is squeezing onto the scene Tuesday, May 20th! This limited-time flavor is here to keep you at your best all summer long, and, just like summer, it’s here for a good time, not a long time, so stock up while supplies last! If you want to give Lemonade Salt or any of the fantastic LMNT flavors a try, just head on over to drinklmnt.com/mattwalker and get your free Sample Pack with your first purchase.
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As always, if you have thoughts or feedback you’d like to share, please reach out to Matt or Eti:
Matt: Instagram @drmattwalker, X @sleepdiplomat,
YouTube https://www.youtube.com/@sleepdiplomatmattwalker9299