I used to do japanese wrestling which is a little more brutal and swords manship classes so that way I could go to one of my hated friends from school and scream HHHHHHHHHHHHHHHIIIIIIIIIIIIIIII ya and fake attack them and have some fun out of it LOL jk. No I really did all that for like 2 years and you can get damn near riped from doning it like every other day and learn to defend yourself really well when ya gotta