Well, I'm old already at 19 and have found myself with injured ACL, MCL, and LCL in my right knee. After about a year of working through it (stupid, I know), RICE, and some PT, it's considerably better. My uncle recommended weights to strengthen my knees but his eloquence via phone sucked at describing exercises that I should do and proper, safe execution. As well, I brilliantly got my arm popped (if any of you are familiar with a Jiu Jitsu armbar, that's what happened) in a competition this past weekend. Same deal, PT, RICE, but I have Worlds in a week and a half and need to be doing some stuff on my own. I'd appreciate any recommendations on workouts for recovery or prevention once I heal. Thanks guys!