Shu Ha Ri Do “Flex Fist Boxing”. Hit fast, hit hard, without telegraphing, with this explosive, non-conventional and cutting edge boxing philosophy created by Sifu G. J. Harris. Shu Ha Ri Do Flex Fist Boxing is a compliment for conventional boxing, and features fundamentals of speed and mechanics that will increase the speed and precision of any boxer, martial artist, or fighter. Watch the book trailer below:
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