Start with Level 1 and advance through Level 3 – in no time you’ll achieve a lean, shredded body. The program includes three complete 20-minute workouts which progress by level of intensity. As your own personal trainer, Jillian will guide you through her exclusive 3-2-1 Interval System that combines strength, cardio and abs to blast through calories for a dramatic 30 DAY SHRED. Jillian Michaels is TV’s toughest trainer, but she is committed to getting big results. According to the Product Description on Amazon: I was looking for a way to amp-up my fitness routine, and I have several fit friends who like this DVD. (Jillian Michaels 30 Day Shred on Amazon) When I was doing some last-minute Christmas shopping at Best Buy, this DVD jumped into my cart.