PE Update.com - Physical Education Lesson Plans, Activities, Games, Tips PE Update.com - Physical Education Lesson Plans, Activities, Games, Tips PE Update.com - Physical Education Lesson Plans, Activities, Games, Tips PE Update.com - Physical Education Lesson Plans, Activities, Games, Tips Physical Education Update
How Karate Experts Break Boards

Humans can generate six times the force needed to break a board with their hand, but training is vital to ensure this force is directed correctly.
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