Brazilian Jiu Jitsu (also known as Gracie Jiu Jitsu) is a martial art, combat sport & self-defense system that focuses on grappling & ground fighting. Brazilian Jiu Jitsu was formed from Kodokan Judo ground fighting fundamentals that were taught to Carlos Gracie by Master Mitsuyo Maeda. Brazilian Jiu Jitsu eventually came to be its own art through the practices & adaptation from the Judo knowledge of Carlos & Helio Gracie, who then passed their knowledge on to their family.
Brazilian Jiu Jitsu is primarily a grappling art which uses leverage & position to overcome opponents who are bigger & stronger. With the use of leverage, taking the fight to the ground, & applying proper techniques (joint-locks, choke-holds, etc.) a smaller, weaker individual can successfully defend against a bigger, stronger assailant. Live drilling & rolling (sparring) is an essential aspect of training. Aside from self-defense, Brazilian Jiu Jitsu training can be used for sport grappling tournaments & MMA (mixed martial arts) competitions.