I am turning into a huge couch-potato lately, I must have put on 20 pounds since April 1st (was in v v good shape) due to sitting on my ass all day, traveling a lot, and drinking in excess.

For the first 2-3 months of the year I was doing some cool and interesting stuff, perhaps a bit old school, but it seemed to work and was fun at the same time. The main thing I got into was plyometrics, which I'm sure wufwugy will come in and say is horrible for your joints and blah blah blah, either way it's a hell of a workout and I enjoyed it.

I'm looking for other interesting workouts, there really is no limitation.

I'm thinking of choosing a few of these:

1. BJJ
2. Ultimate
3. Muay Thai

I figure ultimate I would meet some cool people, BJJ could potentially hold real-world applications, and muay thai would be a helluva workout.

Any other ideas are appreciated, maybe boxing/karate forms but I did do tae-kwon-do for 6 months and frankly it didn't seem intense enough for me.