Health and fitness expert Mark Sisson is the publisher of the acclaimed MarksDailyApple.com, a popular health blog with millions of pageviews each month. His 2009 book, The Primal Blueprint, climbed to a top-10 ranking in amazon.com's health and fitness category, and has been critically acclaimed for challenging many flawed elements of Conventional Wisdom about diet and exercise. Sisson's "Primal" theme encourages us to reconnect with our hunter-gatherer ancestral roots: eating natural plant and animal foods, getting plenty of low-level daily activity interspersed with occasional brief, intense exercise, and engaging in lifestyle behaviors that balance the stress of hectic modern life. Sisson was one of the world's most versatile and accomplished endurance athletes, with a 2:18 marathon to his credit and a fourth place finish in the Hawaii Ironman World Triathlon Championships. He also served as the first anti-doping leader of the International Triathlon Union and consulted internationally for the International Olympic Committee on endurance training, nutritional supplementation, and the effects of performance enhancing drugs on athletes. He is the founder and president of Primal Nutrition, Inc. a Malibu, CA supplement company. Sisson lives in Malibu with his wife and two children.