This weekend I’ve discovered StepMania. This is a game inspired in the recreational machines of DDR (Dance Dance Revolution).
I’m sure you’ve seen something like that in some recreational parks with people dancing on it:

So now I have the software at home and I’ve bought a Dance Pad. I would like to buy a metal one, but for the moment the soft one is ok to improve.
The one I like:

If you can, just try it. It’s funny and you exercise your body at the same time. I can promise you that you sweat a lot.