The days of eating bananas and oatmeal before a race are over. Nowadays extreme endurance athletes are finishing Ironmans (and the like) in ketosis. Enter top competitor, performance trainer, and hardcore biohacker, Ben Greenfield. On this episode of Bulletproof Radio, Dave and Ben discuss many things ketosis, increasing mitochondrial density, and the fine line between moving your body for optimal performance and chronic cardio. The show will also expose Ben’s upgraded protocol for staying in a state of ketosis while training for Ironman competitions. There’s a ton of useful information to take note of here. Check out the show notes for links and resources!

Ben Greenfield is a coach, author, speaker, ex-bodybuilder and Ironman triathlete. His science-based approach to discovering a potent balance between health and performance has revolutionized the way thousands of athletes and exercise enthusiasts around the world live, train and eat. Ben now works with athletes, CEO’s and soccer moms from around the world to achieve amazing feats of physical endurance without destroying their body in the process. Follow him on Twitter at @bengreenfield.