The Author

John Berardi, PhD, is the author of Change Maker: Turn Your Passion for Health and Fitness into a Powerful Purpose and a Wildly Successful Career and cofounder of Precision Nutrition, the world’s largest nutrition coaching, education, and software company. Over the past 15 years he's advised Apple, Equinox, Nike, and Titleist, as well as the San Antonio Spurs, Carolina Panthers, U.S Open champion Sloane Stephens, and UFC legend Georges St. Pierre. He's also been named one of the 20 smartest coaches in the world and 100 most influential people in health and fitness. He lives in Ontario, Canada, with his wife and four children, although they tend to escape to warmer places from January to April.