I have to disagree with Chazwozel. I love my science. I love digging deeper into it. He's write about the Ph.D. job market, though. It sucks. And worse, you don't really get to pick where you want to live. There are places that I would love to live, but I can't. I'm in a state and town that are ... incompatible with my desires and personality. Not that there's anything bad about it (sorry CG), it's just boring as hell.
As for the OP, I'm learning Shotokan Karate. It's actually kind of hard, because I have to unlearn some habits I have from other martial arts. Fencing, especially, which has almost exactly opposite stances, etc.