Judo´s founder Jigoro Kano often cited the example below during his lectures to demonstrate how to use the force of the adversary to beat this one using minimal force and maximum efficiency:
"Judo searches to ally our force with contrary force to master this last. By allying two forces, we add them, rather than subtract them.
If someone of force 10 pushes an opponent of force 7, this last will be overthrown, even if he uses all his strength against the other. But if man of force 7 yield by turning his body and keeping his balance, the man of force 10 will be forced to lean forward and will lose his stability.
In his new position out of balance, the strongest man will have its strength reduced to 3, by example, while the man of strength 7 maintains its strength intact by keeping his balance. He can even use half of his strength (3 1/2) to beat the opponent, which represents a saving of energy."
Each Judo´s technique has three stages:
• kuzuchi: to break an opponent´s balance
• tsukuri: to get into position
• kake: to do the actual attack
During kake, leverage is applied. After finding an axis around which he would be able to maneuver an opponent, a judoka uses his shoulders, legs or hips to throw him in the same direction in which the opponent's balance is momentarily unstable.