Is dance dance revolution good exercise?

Yes: Along with the other dance games, these games are good at getting you moving while keeping you entertained.

Can be: Especially on the more extreme levels. I just tell patients, that anything that gets you moving and your heart rate up is great. And it's even better if you love to do it, as that will help you do it consistently. That's one of the keys of exercise, you have to do it consistently!