The book fans have been clamoring for—the diet and exercise plan that enabled contestants to transform their bodies and their lives on TV’s new smash hit reality show

The Biggest Loser was NBC’s surprise hit of the Fall 2004 television season, drawing a passionate audience and prompting people nationwide to start their own Biggest Loser competitions. This unscripted weight-loss drama was based on overweight contestants competing to lose weight and win a quarter of a million dollars with the help of a team of doctors, dietitians, and trainers Bob Harper and Jillian Michaels.