The 3 Core Principles

Ju means "gentle". It is the founding principle of judo: rather than opposing the opponent's force head-on, you yield first in order to use it to your advantage.

In practice: when an opponent pushes, you step back and throw. When they pull, you advance and unbalance. The judoka learns to read the force in front of them and adapt rather than fight it.

This principle extends beyond the tatami: in life, adapting to a difficult situation rather than fighting it head-on is often the best response.

This principle states: use your energy in the most efficient way possible, wasting none — not in strength, not in thought, not in emotion.

On the tatami, this means precise techniques that let a lighter judoka throw a much heavier opponent using leverage and unbalancing effects.

In daily life, this principle encourages always seeking the most appropriate method, without exhausting yourself unnecessarily.

This third principle is the keystone of judo: progress together, for everyone's benefit. Without a partner, there is no judo.

The dojo is a community. The effort each person puts in for themselves contributes to the progress of the whole group.

For Kano, this principle went beyond sport: judo was meant to shape citizens capable of living and acting for the common good.