Brought to you by AG1 all-in-one supplement https://drinkag1.com/tim and Eight Sleep’s Pod Cover sleeping solution for dynamic cooling and heating https://www.eightsleep.com/tim Dr. Peter Attia (PeterAttiaMD.com) is a former ultra-endurance athlete (e.g., swimming races of 25 miles), a compulsive self-experimenter, and one of the most fascinating human beings I know. He is one of my go-to doctors for anything performance or longevity-related. But here is his official bio to do him justice: Peter is a physician focusing on the applied science of longevity. His practice deals extensively with nutritional interventions, exercise physiology, sleep physiology, emotional and mental health, and pharmacology to increase lifespan (how long you live), while simultaneously improving healthspan (how well you live). Peter trained for five years at the Johns Hopkins Hospital in general surgery, where he was the recipient of several prestigious awards, including Resident of the Year, and the author of a comprehensive review of general surgery. He also spent two years at NIH as a surgical oncology fellow at the National Cancer Institute where his research focused on immune-based therapies for melanoma. He has since been mentored by some of the most experienced and innovative lipidologists, endocrinologists, gynecologists, sleep physiologists, and longevity scientists in the United States and Canada. Peter also hosts The Drive, a weekly, deep-dive podcast focusing on maximizing longevity and all that goes into that, from physical to cognitive to emotional health. It features topics including fasting, ketosis, Alzheimer’s disease, cancer, mental health, and much more. Subscribe on Apple Podcasts, Spotify, Overcast, or wherever you listen to podcasts. Please enjoy! This episode is brought to you by Athletic Greens. I get asked all the time, “If you could only use one supplement, what would it be?” My answer is usually Athletic Greens, my all-in-one nutritional insurance. I recommended it in The 4-Hour Body in 2010 and did not get paid to do so. I do my best with nutrient-dense meals, of course, but AG further covers my bases with vitamins, minerals, and whole-food-sourced micronutrients that support gut health and the immune system. Right now, Athletic Greens is offering you their Vitamin D Liquid Formula free with your first subscription purchase—a vital nutrient for a strong immune system and strong bones. Visit https://AthleticGreens.com/Tim to claim this special offer today and receive the free Vitamin D Liquid Formula (and five free travel packs) with your first subscription purchase! That’s up to a one-year supply of Vitamin D as added value when you try their delicious and comprehensive all-in-one daily greens product. * This episode is also brought to you by Eight Sleep! Eight Sleep’s Pod Pro Cover is the easiest and fastest way to sleep at the perfect temperature. It pairs dynamic cooling and heating with biometric tracking to offer the most advanced (and user-friendly) solution on the market. Simply add the Pod Pro Cover to your current mattress and start sleeping as cool as 55°F or as hot as 110°F. It also splits your bed in half, so your partner can choose a totally different temperature. And now, my dear listeners—that’s you—can get $250 off the Pod Pro Cover. Simply go to https://EightSleep.com/Tim or use code TIM. Connect with Tim Ferriss: Sign up for "5-Bullet Friday" (Tim's free weekly email newsletter): https://go.tim.blog/5-bullet-friday-yt/ Visit the Tim Ferriss PODCAST: https://tim.blog/podcast/ Visit the Tim Ferriss BLOG: https://tim.blog/ Follow Tim Ferriss on TWITTER: https://twitter.com/tferriss/ Follow Tim Ferriss on INSTAGRAM: https://www.instagram.com/timferriss/ Like Tim Ferriss on FACEBOOK: https://www.facebook.com/TimFerriss/