After learning how to make a proper fist and how to punch from shizentai (natural posture/stance), one of the first techniques beginners usually learn to execute while moving forward in zenkutsu-dachi (front stance) is oi-zuki (straight punch). Coordinating ipsilateral movement of the upper and lower limbs is not something that comes naturally to most, as human gait invokes alternating the swing of the upper limbs with the contralateral leg when walking or running. Thus, although one of the earliest sequences in motion learned in karate, coordinating a punch with the same side of the body as the front leg is paradoxically…