Technical principles

applicable against adversaries five times stronger than oneself In ju-jitsu, physical strength is not used, natural forces are employed instead: inertia and gravity, one’s own force and that of the adversary, in combining them rationally. In this way, it can be used effectively against much stronger opponents.
Rational use is also made of the muscular force of the adversary and of his pressure points as well as one’s own internal energy, concentrated in the ‘hara’ (a point in the body close to its centre of gravity).

Therefore, Butokukai ju-jitsu is a self-defence method suitable for all !

For Butokukai ju-jitsu, a good technique must have the following properties, without omitting a single one: