Bosu Crush It Fitness DVD Designed for use by fitness professionals 6 sets of drills and challenges that focus on balance, core, upper and lower body strength, cardio and agility 3 unique drills in each fitness category to train that component of fitness followed by a fun challenge to self-test that same component Teaching and coaching cues to maximize the effectiveness of each drill and challenge For use with BOSU Balance Trainer, BOSU Ballast Ball, BOSU Soft Fitness Ball - 4 lb