Why You Need FAR Less Carbs Than You Think (Especially During Exercise) & Ketones As An "Alternate Fuel", With Dr. Andrew Koutnik - Part 2

Full Show Notes: bengreenfieldlife.com/drandrew2 In this episode, Dr. Andrew Koutnik returns for part 2 of our deep dive into metabolism and nutrition. We explore why you need far fewer carbohydrates than you think—both during daily life and intense exercise—and how sustained blood glucose levels for brain energy metabolism matter more than muscle glycogen stores. Andrew breaks down the different types of exogenous ketones, debunks liver toxicity concerns, and shares groundbreaking research on ketones for sleep quality and sleep apnea treatment from his NASA astronaut studies. Andrew Koutnik is a research scientist whose career bridges cutting-edge science, elite performance, and personal experience living with type 1 diabetes for over 17 years. His work focuses on how nutrition, metabolism, and lifestyle can be leveraged to maximize human health, performance, and resilience across diverse conditions—from chronic disease to extreme environments. Episode Sponsors: ZBiotics Pre-Alcohol Probiotic: The world's first genetically engineered probiotic that helps break down the toxic byproduct of alcohol, Zbiotics Pre-Alcohol allows you to enjoy your night out and feel great the next day. Order with the confidence of a 100% money-back guarantee and 15% off your first order at zbiotics.com/BEN15. Young Goose: To experience the transformative power of Young Goose's cutting-edge products, visit younggoose.com and use code BEN10 at checkout to enjoy a 10% discount on your first order. Troscriptions: Explore Troscriptions' revolutionary buccal troche delivery system that bypasses digestion to deliver pharmaceutical-grade, physician-formulated health optimization compounds directly through your cheek mucosa for faster onset and higher bioavailability than traditional supplements. Discover a completely new way to optimize your health at troscriptions.com/BEN or enter BEN at checkout for 10% off your first order. Formula IQ: Recuperate IQ by Formula IQ is a comprehensive copper supplement designed to support mitochondrial energy, iron balance, and metabolic health by pairing bioavailable copper with essential cofactors your body needs for proper utilization, which is especially crucial if you've been under chronic stress or supplementing with high-dose zinc. Try it at formulaiq.com and use code BEN for 10% off.