Help deciding on a hobby?

I'm taking up a hobby in the near future, and I can't decide between the following:





Martial Arts (I've watched too many Chuck Norris movies)





Dance (I've wanted to know how to dance since I was a kid and saw Grease)





Music (I've always got catchy little tunes running through my head, just not sure how to get them out...)





Running (I already do light jogging and weightlifting, I'm talking about hardcore, organized running)





So, which would you reccommend and why?

Help deciding on a hobby?
Music, get those catchy tunes out of your head.





Running, it's cheaper than martial arts and he who fights and runs away lives to fight another day.