Nindokai is a self-defense system which builds on the basis of Japanese and other martial arts. It was established in 1990 by Dr Gerhard Schönberger in Germany and since then it has been continually adapted to the needs of the 21st century and has reached a lot of acceptance especially by police forces and security-companies. Nindokai teaches to end a fight or to avoid a present attack in a simple, fast and as effective way as possible with the least possible risk to one's self, i.e. to survive.
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