Fat burners are dietary supplements designed to increase metabolism, reduce appetite, and promote fat loss. They work by stimulating thermogenesis, which helps the body burn more calories at rest and during exercise. Common ingredients in fat burners include caffeine, green tea extract, and forskolin, which help improve energy levels, suppress appetite, and enhance fat oxidation. Ideal for individuals looking to accelerate fat loss, fat burners are commonly used during cutting phases or weight loss programs, when combined with a proper diet and exercise regimen.