DDR is too fun. It involves body and eye coordination. It involves thinking, which is good to do... THINK. Think about which foot to the arrow with. Thinking about your timing. Focus on the beats, etc ...
Just make sure to do some workouts at home. Sit ups for your stomach muscles and squats for your leg muscles help out a lot. Also, standing on your tippie toes for a long time helps out with calfs. By ...