Brazilian Jiu-Jitsu (BJJ) is a martial art, combat sport, and a self defence system that focuses on grappling and especially ground fighting. The art comes from the Japanese martial art of Kodokan judo in the early 20th century.
It teaches that a smaller, weaker person can successfully defend against a bigger, stronger assailant by using leverage and technique. It works by applying joint-locks and choke-holds to defeat the other person. Brazilian Jiu Jitsu training is used for sport grappling tournaments and mixed martial arts (MMA) competition
or self defence. Sparring (commonly referred to as ‘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 the grades/belts.