A short list of martial arts systems to be improved upon during this series include: Judo, Brazilian Jiu Jitsu (BJJ), Boxing, Taekwondo, American Kenpo, Muay Thai, Capoeira, Wrestling, Shotokan, Krav ...

A bare-chested man bursts athletically across the floor, flipping sideways, striking out a fierce kick, high above the heads of the screaming crowd. His rival hits back – sliding across the space with ...