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 emphasizes personal transformation and motivation, showcasing the challenges and successes of each participant. Contestants are eliminated weekly based on their weight loss results, with the ultimate goal of winning a cash prize. The Biggest Loser has inspired many viewers to pursue healthier lifestyles.