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A Karate Chop Offers Proof of the Power of Physics

A karate chop, or shuto strike, is one of the few things in life that offers visceral proof of the power of physics. If you are untrained in the martial arts and you karate chop a brick, you may break a finger or worse. But if you karate chop that brick with the proper force, momentum, and positioning, you’ll break the brick instead. “Amazingly, there are no tricks involved,” says Michael Feld, a physicist at MIT. “What you have here is one of the most efficient human movements ever conceived.”

Jean Jacques Machado: Brazilian Jiu-jitsu

Born in Rio de Janeiro, Brazil, Jean Jacques Machado is one of five brothers of the world-renown Machado Brazilian jiu-jitsu family. Jean Jacques Machado began his...

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