Brazilian Jiu-Jitsu or BJJ is a martial art based on grappling and ground fighting, focusing on the skill of controlling your opponent through mastery of technique. The system was built for a smaller opponent to beat a larger opponent through use of leverage and proper technique. More than 80% of physical altercations end up on the ground. BJJ is proven to be the most effective ground fighting system. Not only is it enjoyable to learn, but it also gives the everyday person a means to defend themselves.