Mark Sisson is an American fitness author, food blogger, and a former distance runner, triathlete and Ironman competitor. He's the founder of Primal Kitchen. 15 Daily Steps to Lose Weight and Prevent Disease PDF: https://bit.ly/46XTn8f - Get my FREE eBook now! Become a Genius Life Premium Member! Learn more: http://thegeniuslife.com This episode is proudly sponsored by: Bite makes my favorite low toxin toothpaste alternative sent in refillable, compostable pouches! Head to trybite.com/genius or use code GENIUS for 20% off of your first order. LivOn Labs are masters at liposomal encapsulation to maximize absorption of nutrients like vitamin C, magnesium threonate, glutathione and more. Right now get 1 free vitamin C box when you buy one at LivOnLabs.com/genius/. JustThrive makes high quality probiotics with mental health in mind. Get 20% off the Just Calm and Just Thrive Probiotic when you go to JustThriveHealth.com and use code GENIUS at checkout!