It takes good posture to have good balance. If you bend your front knee more than your back knee on your ground strokes, you’ll lean forward at the waist and ?nd yourself falling into your shot. The trick is to bend your back knee (if you’re right-handed, your right knee for a forehand and your left knee for a backhand) more than your front. When you bend properly, you won’t lunge or hunch over to get down for your shots.