bjj

Brazilian Jiu-Jitsu (Portuguese pronunciation: [ʒuˈʒitsu], English: /dʒuːˈdʒɪtsuː/) is a martial art, combat sport, and a self defense system that focuses on grappling and especially ground fighting. The art was derived from the Japanese martial art of Kodokan judo in the early 20th century,[1][2] which was itself developed from a number of schools (or Ryu) of Japanese jujutsu in the 19th century.

It teaches 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. Brazilian Jiu Jitsu can be trained for sport grappling tournaments (gi and no-gi) and mixed martial arts (MMA) competition or self defense .[3] 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 grades/belts.

http://en.wikipedia.org/wiki/Bjj