I am a freelance programmer working from home, I recently realized that my physical condition is getting worse so I would like to start with some sort of exercise program which I can do at home, it would be fun and I would eventually build some muscles or strengthen my body (don't really need to loss weight - at least not yet :)).
I am not completely lame, I go swimming occasionally and I play local amateur badminton league. I used to sport a lot in the past (martial arts, squash for couple of years, gym, climbing, swimming at least once a week for ~5 years). But I kinda became lazy in past two years so I want to change that :)
So what do you think is a good exercise system for such a person? I've heard about various like P90 or others but I cannot really decide which one would be a good fit.
Thanks a lot for any answers