Suitable for those who want to sweat and move without a lot of time to devote to sports daily. 25 minutes of non-stop effort, without "water break"! An additional 3 mn with small dynamic stretching late in the session. Nice atmosphere! It is less intensive and less "traumatic" that INSANITY. Works primarily cardio, legs and abs. There are also some exercises of "small" weights. Most programs do not require additional equipment. For workouts involves hardware, it is small dumbbells or elastic resistance bands and mat if you practice hard ground. On the program, small jumps and pumps of all kinds, burpees, squats, abs and stretchs ... The usual recipe Shaun T! Lets play sports every day by spending a minimum if we lack of time, or can be used for a very good warm. As for the results, I have no personal observations on any metamorphosis.