Hey, T.D.O. Interesting that you have mentioned the moderate practice of short range fist striking palm for conditioning to keep your hands ( bones,veins,nerves) in shape. Also striking the "back-fist" part of your hand in the same manner. These exercises make a nice splatting sound. I've been doing this for years with the addition of using a palm/fingers striking slap to the forearms (upper ridge) to condition against the pain/ temporary paralysis that can occur from an opponent's strike.