Brazilian jiu-jitsu (BJJ) is a martial art and self defense system that focuses on grappling. Brazilian Jiu Jitsu promotes the concept that a smaller, weaker person can successfully defend against a bigger, stronger assailant by using leverage and proper technique – most notably by applying joint-locks and chokeholds to defeat the other person.

Rolling and live drilling play a major role in training, and a premium is placed on performance, especially in competition, in relation to progress and ascension through its ranking system. BJJ training is practical for self defense, sport grappling tournaments (gi and no-gi) and mixed martial arts (MMA) competition.