Generating Martial Power (Jin) Jin, or Martial Power, can generally be divided into three categories: Hard Jin, Soft-Hard Jin and Soft Jin.
Among these, Hard Jin uses the most muscular power, followed by Soft-Hard Jin and finally Soft Jin. But no matter which Jin, in order to manifest maximum power you must have both the strength of the physical body (Yang) and a sufficient supply of smoothly circulating Qi (Yin). Krav Maga. Fitness. Martial arts. Brazilian Jiu Jitsu Submissions.