Brazilian Jiu Jitsu often referred to as BJJ is the single most effective martial art available. BJJ focuses on grappling or ground fighting and has an emphasis of positional control, joint locks, submission holds and chokes. BJJ is known as it is today by the adaptation, trial, errors, and experimentations done by Carlos and Helio Gracie, who put these experimentations to test in live challenge matches. BJJ promotes the idea that a smaller weaker person could overcome a bigger, stronger opponent/attacker by using technique and leverage upon taking the fight to the ground. Once on the ground size and strength can be overcome by the smaller person maximizing their own force and using it to a mechanical advantage.