I did quite a bit of martial arts training in High School and college. To this day I think it made me far more violent than if I had not done it. I faught often in school. I ended up with a bit of a reputation. I was never a big guy, but I would routinely be involved in fights with guys who out weighed me by quite a bit, and would win. Even a small guy with the right training can take out a big guy, either straight up fighting, or on the ground. Don't underestimate anyone. I have since quit the martial arts and I haven't fought since the late 80's. I am much happier with myself.