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Jason Armstrong

Jason Armstrong has competed in a full contact mixed martial art event inside Japan and paid his way through college by working as a bouncer in the 2nd half of the 1980s. Today, he cross-trains with BJJ once a week to explore karate theories and the MMA world and has authored 4 books on karate, including a novel textbook on evidence based practice (EBP) for martial arts, Fighting Statistics & Karate Technique Selection & Medical Outcomes.