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.  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   QUOTES:   “The problem is that when we begin to say, oh, that must have been something in the food that you ate, rather than, oh, it's something in your individual response to that extra energy.” [21:33]   “It really does come down to the calories or what determines the weight change or maintenance, not the carb level.” [24:13]   “The argument is, is this more in the weeds? Is it fat cells and pancreas? Or is it brain cells and sensing?” [32:29]   “It is my job to keep eyes open and look across cultures and look across human experiences and see that diversity and understand all of it is pretty normal. That the universe of normal for humans is pretty darn broad.” [33:11]   “Sugar is a fructose molecule and a glucose molecule stuck together, and when it gets into your blood, that's what it is.” [38:38]   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

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