I was VERY disappointed with this video. The main reasons...Zak Lee's lack of experience as a fitness instructor, a useless and annoying chick named Ellen K (who performs several movements wrong and talks entirely too much), and a strange format called "Rounds" that accomplishes nothing more than dragging out what little workout there is. The only part of the video I did like was the dance-like, choreographed segment which is strictly for your entertainment. Invest in something else.