"The Biggest Loser" is a reality television show that focuses on weight loss and fitness. Contestants, often struggling with obesity, compete to lose the most weight over a series of weeks. They receive guidance from trainers and nutritionists, participating in intense workouts and learning about healthy eating habits. The show features weekly eliminations, where contestants face challenges to avoid being sent home. The ultimate goal is to win a cash prize, awarded to the contestant who loses the highest percentage of body weight by the end of the season. The program emphasizes personal transformation and lifestyle changes.