This is the best workout. I wanted something fun and challenging and this is that! It is not for someone just starting to exercise. This program is for somone that is already in good physical condition and already exercises regularly. It was hard but I felt great at the end of the session. After about 2 weeks it got easier, but when month 2 started up it was hard again. I have completed this once and now do the workout 3 times a week between the days I jog. I couldn't believe how toned I got and how cut my stomach is. I would recommend this to anyone who wants an advanced workout.