Self-defense is a derivative of Brazilian Jiu-Jitsu (BJJ). Self-defense class from DEFGROUP will guide you on how to use leverage in the right place and at the right time to avoid being invaded taller and stronger opponents. The core of Jiu-Jitsu and its self-defense is the use of effective techniques to deal with brutal force and aggression. DEFGROUP provides high-end wellness solutions through the instruction of martial arts to all people. DEF Boxing(Hong Kong) and SHBJJ(Shanghai) are affiliated brands of DEFGROUP in China.