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 various challenges and eliminations, with contestants weighing in weekly to track their progress. The ultimate goal is to inspire viewers to adopt healthier lifestyles while showcasing the physical and emotional transformations of the participants. The winner typically receives a cash prize and the title of "Biggest Loser."