Hammering a nail into a wall replicates the motions that are Vital to a synchronized and powerful swing. The keys are the hinging of your right wrist on the takeaway and a proper release in which you hold the hinge before snapping your right wrist at impact. In this drill, stand in your address position, then swing a hammer back and through, driving a nail into the wall. This motion is exactly what Nick Price does with a golf club. Notice that my right elbow stays close to my right side during the backswing, and that during the downswing my right wrist is lagging behind my hand and parallel to the ground. In the release, keep your right hand hinged until the last possible second to generate maximum power.