Ian K. Smith, M.D. is the #1 New York Times bestselling author of Fast Burn!, The Clean 20, SHRED, The Fat Smash Diet, and many other books. He has created two national health initiatives-the 50 Million Pound Challenge and the Makeover Mile-and served two terms on the President's Council on Fitness, Sports, and Nutrition. A graduate of Harvard, Columbia, and the University of Chicago's Pritzker School of Medicine, Smith is an avid fitness enthusiast and sportsman.