Ju-jitsu spread among the samurai as a way to neutralize an opponent in the Japan of the 17th century. Ju-jitsu absorbs an attack and uses its energy against the attacker. Thus the "Gentle Art" or “Art of Suppleness”, for this is the meaning of the Japanese name, does not neutralize power with power but aims to rationally absorb an attack and convert that energy to the opponent’s detriment.
In today's “Fighting System”, two athletes have two times two minutes to defeat the opponent on points or by surrender. The sparring bouts are divided into distance combat, grounding techniques and the final phase on the tatami mat.
In the “Duo System”, two collaborative jutsukas demonstrate rehearsed self-defence techniques against a series of attacks randomly called by the mat referee. These attacks cover specific scenarios: grip attack, embrace attack, hit attack, and armed attack with stick or knife.
The Ne-Waza System became famous under the name Brazilian Jiu-Jitsu. It is called human cess as well. Srategies and tactics are desingned to make your opponent waste his energy to submitt him/her later in the fight. Most of this competition happens on the ground.