Brazilian Jiu Jitsu is a grappling-based martial art that is built around the central theme of controlling a resisting opponent in ways that force them to submit. Much of the technique of Brazilian Jiu Jitsu (BJJ) is instructed around the skill of taking an opponent down to the ground and wrestling for dominant control positions. The goal is to render an opponent harmless. BJJ allows for a smaller person to overcome a larger opponent using superior leverage, grip, and position to force a submission. The martial art of BJJ is physically and mentally demanding, but benefits the student with increased fitness, problem solving and knowledge of the body and its limitations.