Author and founder of The Primal Blueprint, Mark Sisson, opens up on AMP at his home in California to share his secrets to success on a keto diet and explain why he shuns the biohack trend to follow the tried-and-true evolutionary approach to human optimization. Through in-depth scientific descriptions, Sisson logically lays out every import aspect in a successful keto diet. By doing so, he answers what a keto diet is, and how one would start it. Marcus joins in with some of his personal favorite keto diet recipes, as well. Sisson finishes off the conversation by mentioning the psychological implications for correct dieting and portion management, and how important it is.