A kettlebell is a cast-iron weight that resembles a cannonball with a handle. It is used for strength training and conditioning exercises. Kettlebells come in various weights, making them suitable for beginners and advanced athletes alike. They are versatile tools that can help improve strength, endurance, and flexibility through dynamic movements. Using a kettlebell can enhance workouts by engaging multiple muscle groups at once. Popular exercises include swings, snatches, and Turkish get-ups. Many fitness enthusiasts appreciate kettlebells for their ability to provide a full-body workout in a short amount of time, making them a favorite in gyms and home fitness routines.