It is a martial art and combat sport system that focuses on grappling and especially ground fighting. Brazilian Jiu-Jitsu was formed from Kodokan Judo ground fighting (newaza) fundamentals that were taught by a number of individuals including Takeo Yano, Mitsuyo Maeda and Soshihiro Satake. Brazilian Jiu-Jitsu eventually came to be its own style through the experiments, practices, and adaptation of Judo through Carlos and Helio Gracie (who passed their knowledge on to their extended family) as well as other instructors who were students of Maeda, such as Luiz Franca. Brazilian Jiu-Jitsu promotes the concept that a smaller, weaker person can successfully defend themselves or another against a bigger, stronger, heavier assailant by using proper technique, leverage, and most notably, taking the fight to the ground, and then applying joint locks and chokeholds to defeat the opponent.
International Brazilian Jiu-Jitsu Federation Official Website click here