This is the closest I've been able to come to finding a DVD to replace the awesome Pilates class I used to attend. Since I moved to a new town I've been struggling to find a Pilates class or DVD that isn't a "10 minute workout." This flows really well and Mallett incorporates cardio well, which is what I loved about my old classes. I feel challenged by this workout. The ball is a new element, as I've always done mat Pilates with a band or 3lb weights. I adjusted to the ball immediately. As another reviewer mentioned, I feel that the ball has helped improve my form.