Mark Sisson, author of the 2009 bestseller, The Primal Blueprint, and de-facto leader of the primal/paleo lifestyle movement, expertly applies primal lifestyle principles to the unique challenge of endurance training and racing. Unlike the many instant and self-anointed experts who have descended upon the endurance scene in recent years, Sisson and his co-author/business partner Brad Kearns boast a rich history in endurance sports. Sisson has a 2:18 marathon and 4th place Hawaii Ironman finish to his credit, has spearheaded triathlon’s global anti-doping program for the International Triathlon Union, and has coached/advised leading professional athletes, including Olympic triathlon gold and silver medalist Simon Whitfield and Tour de France cyclist Dave Zabriskie. Under Sisson’s guidance, Kearns won multiple national championships in duathlon and triathlon, and rose to a #3 world triathlon ranking in 1991.