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.

Begin your workout with light cardio and dynamic stretching.

Broken into seven 6-minute circuits, these killer combo moves target the shoulders, chest, arms, abs, back, legs, hips, and glutes.

Fire up your metabolism with TV's top trainer, Jillian Michaels, and lose big with her fierce formula that adds strength and ab moves to dynamic cardio for increased fat loss. This circuit workout blasts your heart rate with challenging intervals to turn up the burn and melt off the pounds. whether you're just getting started, or ready for a hard-core workout, revel a ripped, lean body! Jillian will help you!

Fire up your metabolism with TV's top trainer, Jillian Michaels, and lose big with her fierce formula that adds strength and ab moves to dynamic cardio for increased fat loss. whether you're just getting started, or ready for a hard-core workout, revel a ripped, lean body! Jillian will help you!

Fire up your metabolism with TV's top trainer, Jillian Michaels, and lose big with her fierce formula that adds strength and ab moves to dynamic cardio for increased fat loss. Whether you're just getting started, or ready for a hard-core workout, revel a ripped, lean body! Jillian will help you!