Brazilian Jui-Jitsu (also known as BJJ) is a martial art and combat sport which promotes physical fitness, character building and a way of life. BJJ focuses on grappling and ground fighting. The concept behind Brazilian Jui-Jitsu is that even a smaller, weaker person can successfully defend themselves against a bigger and stronger opponent. Brazilian Jiu Jitsu is becoming increasingly popular. Numerous celebrities such as Ashton Kutcher, Guy Ritchie, Vin Diesel and Ed O’Neill have been practicing this sport for years.