Join celebrity fitness trainer Jillian Michaels in one of the most popular home workout programs ever created. Using her proven 3-2-1 Interval System, each workout combines three minutes of strength training, two minutes of cardio, and one minute of core exercises to maximize calorie burn and build lean muscle. Featuring three progressively challenging 20-minute workouts, 30 Day Shred is designed to help participants improve strength, endurance, and overall fitness in just 30 days.