Core Rythms

PotsyLee

I recently started doing the Core Rhythms Quick Workout DVD, lasts about 20 mins, building myself slowly to tackling the Full Workout, it is really fun and enjoyable, and when I think nobody is looking, I even do it walking down the street. Does anyone do Core Rhythms, and if so on average do you know how many calories would be burned in the 20 minute workout?