Brazilian Jiu-Jitsu (BJJ) is a martial art focusing largely on grappling and ground fighting. It focuses on the principles of leverage and proper technique to obtain dominant control on the ground, and provides a greater position to resolve conflict by using submission holds.
BJJ has been proven, when used properly, to be an effective method for dealing with bigger and stronger opponents. A student can train in BJJ for self defense, sport jiu-jitsu (and submission grappling) and mixed martial arts competition. It has found its way into the training regiment of nearly every successful martial artist worldwide.