How did your body respond to the last carb heavy dinner you had? Does eating a high calorie meal affect you worse than a lower calorie, higher carb meal? Herman Pontzer, an evolutionary biologist, did a research study on a hunter gatherer community called Hazda in Tanzania, to learn about energy expenditure. What he’s discovered flips everything you thought you knew about calories and carbs upside down. He’s joining Tom to expose why the data shows that carbs in a calorie controlled environment do not matter. Meaning, it is possible to theoretically go on a Twinkie diet (please don’t) and still lose weight when calories are adhered to. Herman is using data to push back on how calories are burned and how they signal your brain to control your weight. Order Herman Pontzer’s book, Burn: New Research Blows the Lid Off How We Really Burn Calories, Lose Weight, and Stay Healthy : https://www.amazon.com/Burn-Research-Really-Calories-Healthy/dp/0525541527  Also check out the Hazda Fund (https://www.hadzafund.org/about) to learn more about the Hazda culture  SHOW NOTES:  0:00 | Introduction to Herman Pontzer 1:40 | The Calorie Debate 6:14 | How We Burn Energy 12:09 | Obesity Starts In The Brain 14:43 | Hypothalamus Function 19:25 | Brain Response to Calories 29:06 | Food Calorie Signaling 32:36 | Optimal Lifestyle 34:53 | Processed Food Brain Hack 38:31 | Why Sugar Is A Problem 42:22 | Hi Carb Diet Weight Loss 45:24 | Fantasy Diet Study  Follow Herman Pontzer: Website: https://sites.duke.edu/pontzerlab/people/ Twitter: https://twitter.com/hermanpontzer Instagram: https://www.instagram.com/hpontzer/ Facebook: https://www.facebook.com/herman.pontzer Check out our sponsors:  Athletic Greens: Go to athleticgreens.com/impact and receive a FREE 1 year supply of Vitamin D AND 5 free travel packs with your first purchase! ButcherBox: Skip the lines for your Thanksgiving turkey. ButcherBox is proud to give new members a free turkey at ButcherBox.com/impact SmileBrilliant: Go to smilebrilliant.com and use coupon code IMPACT ChiliSleep: Get 20% off at chilisleep.com/IMPACT Anthem Software: anthemsoftware.com CuriosityStream: Go to https://curiositystream.com/impact and use code IMPACT to save 25% off today, that’s only $14.99 a year. Are You Ready for EXTRA Impact? If you’re ready to find true fulfillment, strengthen your focus, and ignite your true potential, the Impact Theory subscription was created just for you. Want to transform your health, sharpen your mindset, improve your relationship, or conquer the business world? This is your epicenter of greatness.  This is not for the faint of heart. This is for those who dare to learn obsessively, every day, day after day. Subscription Benefits: Unlock the gates to a treasure trove of wisdom from inspiring guests like Andrew Huberman, Mel Robbins, Hal Elrod, Matthew McConaughey, and many, many, more New episodes delivered ad-free Exclusive access to Tom’s AMAs, keynote speeches, and suggestions from his personal reading list You’ll also get access to an 5 additional podcasts with hundreds of archived Impact Theory episodes, meticulously curated into themed playlists covering health, mindset, business, relationships, and more: Legendary Mindset: Mindset & Self-Improvement Money Mindset: Business & Finance Relationship Theory: Relationships Health Theory: Mental & Physical Health Power Ups: Weekly Doses of Short Motivational Quotes  Subscribe on Apple Podcasts: https://apple.co/3PCvJaz Subscribe on all other platforms (Google Podcasts, Spotify, Castro, Downcast, Overcast, Pocket Casts, Podcast Addict, Podcast Republic, Podkicker, and more) : https://impacttheorynetwork.supercast.com/ Learn more about your ad choices. Visit megaphone.fm/adchoices