Well if you are getting ready to go to priosn, I would prefer Muay thai. It was nicknamed the deadly art because it really is. I would also advise you to read some stuff on persuasion of other humans. I just think it might be useful. I would also advise you to start training real hard like running, pushups, krunckes, lifting weights, chin ups and stuff like that.Remember bruce lee was small, but he was still one of the greatast fighters. If you go to prison dont be scared, because if you are theyll know it. and dont act smug because if you ACT smug most people can tell you are just ACTING. Well man thats all the advice i have. good luck and may God be with you.