Contestants transform mentally and physically as they compete to lose weight and win a cash prize.The simple idea of The Biggest Loser, familiar to dieters the world over, is that "whomever loses the most...wins." Losing weight will be difficult, though, as the 12 contestants (six male and six female) will be faced with real-life temptations that their new approved weight-loss skills and resources should help them overcome -- if they want to win, that is.—Jiilo_Kim