I've practiced one of the lesser known martial arts. I can't disclose which one, because then it would be possible to figure out my identity. It's the possibly most aggressive and distinguished martial art of them all, so it's not karate, judo, jujutsu, taekwondo, or anything like that. It's arguably also the most difficult martial art to master. What I love the most with it is that it requires total concentration throughout the whole training sessions, so it's virtually impossible for me to dwell upon myr problems while I'm there. It's an extreme adrenaline rush, as it's very physically demanding, you constantly are in a kind of combat situation, and it literally is mandatory to express your aggressiveness. There's a link to Zen Buddhism too, and that's how I discovered this philosophy, so it has changed my life in some ways. The only reason I don't practice it now is that the local club can't offer training sessions for the time being due to practical reasons.