NOTE: A Basic Golf Swing is now available that develops the comments below in full, and more, in both words and video.
I hope everybody knows by now that a relaxed golf swing generates more swing speed and thus more power than a muscular effort. Relaxation as a general rule goes only so far, though. We need to know how to apply it.
As always, The Recreational Golfer to the rescue. It’s in the arms.
When you are at address, let your arms hang down freely from the shoulders in a state of complete relaxation. So far, so good, but anybody can do that. The trick is to maintain that kind of relaxation throughout the swing.
It can be lost the instant the club gets taken away, or if it survives that, the instant the club is brought back down.
Maintain that calmness, and that relaxation, by relaxing your mind. Before you take the club away, think to yourself, “One, half, half, half…” and feel the relaxation appearing in both your mind and your body.
Then you can take the club away and let that freely hanging feeling continue throughout the swing, instead of your arms and shoulders tightening up as when the arms and hands are full of “hit.”
That will generate more speed than you thought possible.
If you ever have a chance to swing with a launch monitor, you will find that you get a higher swing speed when your arms are relaxed than if you try to muscle your way to swing speed.
One more thing. You need to swing with a tempo that lets your arms stay relaxed. If your tempo is over your red line, your relaxation will be lost.