In today’s episode, Matt challenges the notion that REM sleep is solely for the brain, revealing its broad impact on physical health. He delves into REM's role in regulating testosterone and growth hormone, crucial for muscle function. Our host also highlights how REM aids muscle recovery via paralysis, boosting blood flow and supporting protein synthesis. Beyond muscles, Matt explores REM's effects on temperature regulation and heart health by boosting heart rate variability and promoting stress resilience. He also uncovers REM's surprising links to reproductive and immune health, from genital blood flow to enhanced immune cell production. Matt emphasizes that prioritizing REM sleep is vital for whole-body well-being, and that, by embracing the full spectrum of REM's benefits, we can all unlock a potent pathway to not just a rested mind, but a thriving, resilient body. 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. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. Matt’s good friend Dr. Peter Attia has helped develop David , a revolutionary new protein bar, and a sponsor of today’s episode! 28g of protein, 0g sugar, only 150 calories – the best ratio EVER! Amazing taste, six flavors, incredibly satiating, and a great source of the protein that helps build muscle, manage metabolic health, and keep you full. Visit davidprotein.com/mattwalker now for an amazing deal: Buy 4 cartons, and get a 5th FREE! . Hurry! Your new favorite protein bar awaits! Tired of untrustworthy protein shakes? Show sponsor Puori prioritizes quality: hormone-free, GMO-free, and pesticide-free. Every batch is third-party tested for 200+ contaminants - you can even scan the QR code for lab results! Matt recommends the addictive dark chocolate flavor with 21g of protein. Ready to experience the Puori difference? Matt’s listeners get 20% off, so visit puori.com/mattwalker today! As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram. Matt: Instagram @drmattwalker or on X @sleepdiplomat YouTube https://www.youtube.com/@sleepdiplomatmattwalker9299
