Health and fitness expert Mark Sisson is the bestselling author of The Primal Blueprint and one of the leading voices of the Evolutionary Health Movement. His blog, MarksDailyApple.com, has paved the way for Primal enthusiasts to challenge conventional wisdom’s diet and exercise principles and take personal responsibility for their health and well-being. Mark’s efforts to promote primal living extend to a line of nutritional supplements, a book publishing company, a Primal Kitchen line with healthy mayonnaise, salad dressing, and other functional foods, and the burgeoning Primal Kitchen Restaurants fast casual restaurant chain. Mark is a former elite endurance athlete, with a 2:18 marathon and a 4th place Hawaii Ironman finish. His latest book, Primal Endurance, applies the primal eating and lifestyle principles to the challenge of endurance training—helping athletes overcome the common conditions of burnout and carbohydrate dependency.