Anyone do UFC trainer or uncaged fighter for x-box kinnect?

My daughter got it and she set me up i did twice, timing is my problem, but we were doing it in the basement on concrete and after the first time i did it i went and bought a yoga mat , much better on the back. I liked it thought it would work if i did it. lots of stomach work witch is my weakest body part. She also has a dance one which was very fun and a good work out. Like anything if you do it , it works