Mark Sisson

American fitness author and blogger, and a former distance runner, triathlete and Ironman competitor

Mark Sisson is the bestselling author of The Primal Blueprint, a former world-class endurance athlete, and one of the leading voices of the burgeoning 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.