Let's look at a common example of how Tennis technique affects the body. A common problem for many players is the grip on the backhand side. If your hand is in front of the racket (figure 11.1a) rather than on top and behind, your arm and shoulder will absorb the shock of the ball hitting your racket. You would be much better off changing to a grip that puts your hand, arm, and shoulder behind the racket at the point of contact with the ball (figure 11.1b), thereby eliminating the shock. It is simply a matter of using the laws of physics to support the racket and ball impact in the proper position. Another possibility is to convert to a two-handed backhand, using the nonracket hand for support behind the racket.