the student is around 50ish and at that age your body don't heal so good. i understand sometimes new students are going to be skeptical of the techniques. it was a simple wrist escape with a partner and he wanted his partner to resist really hard. your right i should of had them change and make him uki and let folks crank it up on him. if you can't follow instructions and go hard on a simple wrist escape i don't really want to show anything more dangerous were there serious chance of injury to ya. Thanks for the advice guys.