Get a power drill or you can get a hand crank drill, and drill down a piece of wood with your left hand. You can do on top, to the sides, or below, each variation trains you left hand muscle in different way for better coordination.
Get a power drill or you can get a hand crank drill, and drill down a piece of wood with your left hand. You can do on top, to the sides, or below, each variation trains you left hand muscle in different way for better coordination.