Learn another defense techniques against straight punches from two hapkido experts in this free martial arts instructional video. Expert: Rafael Negron and Jessica Sherlock Bio: Master Rafael Negron, 6th DAN Master Instructor, is an expert in Tae Kwon Do, Hapkido, Jutjutzu, Kung Fu, Kick Boxing, Combat Hapkido & Aikido. Born in San Juan, PR Filmmaker: Paul Muller

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