IAN K. SMITH, M.D. is the #1 New York Times bestselling author of Clean & Lean, The Clean 20, SHRED, SUPER SHRED, The SHRED Power Cleanse, and Blast the Sugar Out. He has created two national health initiatives-the 50 Million Pound Challenge and the Makeover Mile-and has 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.