I agree bosco: this is no different than collegiate wrestling, track and field, boxing, karate, football, or any other contact sport. In fact, I think it is good for younger kids to get involved in this because martial arts teaches them discipline, self control, and to take their fights into a ring as opposed to the schoolyard.....
Can you imagine these two young kids at 18. They will be incredible fighting machines if they keep it up. As Bosco says, very controlled with no fists thrown. Just holds and ground work techniques.:great: