Level 3

시즌 1, 에피소드 103: Jillian Michaels, winning trainer on NBC's "The Biggest Loser," helps you lose big — up to 20 pounds in 30 days! 30-Day Shred includes three 20-minute circuit-training workouts that burn mega calories and build strong, lean muscle. The workouts get progressively harder so you'll keep your body challenged as you advance through each workout.