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American sports coaches, other than wrestling and boxing coaches, do not think in terms of the center of gravity.
Mike Marshall thinks in terms of the centerline, but not as much in terms of CG acceleration per se.
Japanese sports coaches speak a different language. They think in terms of controlling your body weight first, and then they will speak in terms of applying that body weight to this or that task at hand.
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Take three months of aikido and you will experience a 'scales falling off your eyes' effect as it applies to American sports coaching.