For a right handed golfer through impact area, your driver could be moving anywhere between 60 and well over a 100 miles an hour depending on your age, your ability and how fast you generally kind of swinging the club. When you are moving at this speed, it’s quite hard to control all the different movements of your body, because everything is moving so fast.
Right Hand Golf Tip: How and Why, Lay your Head on a Pillow Golf Swing (Video) - by Peter Finch