Hot answers tagged kick
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Jammed toes
I can't speak to the TKD technique, but I found trouble during years of karate with the ball-of-the-foot recommended mawashi geri technique. Many others have done fine with it. For instance, Shokei Matsui shows it to be a formidable technique against the body and the head in his 100-man kumite; he uses it to devastating effect about a half-dozen ...
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Aikido aims to protect yourself from injury, as well as your attacker (if possible). It aims to use very little, if any, force by itself, but instead redirect the attacker's force back onto the attacker.
A kick is pretty much the opposite. A kick intends to apply a great amount of force onto the target, trying to directly damage it, by force.
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