Three ways to make your tennis serve more powerful

Weighted medicine balls are great for developing power in your serve, and the standing overhead throw uses all of the muscles used in the movement, says Dalton Wong, the founder of TwentyTwo Training. “It’s an explosive exercise that strengthens the core and glutes as well as the triceps, latissimus dorsi muscles in the back and the shoulder muscles,” he says. Stand with your knees slightly bent, your left foot slightly ahead of the right, holding a medicine ball with both hands at chest height. In a continuous movement, engage your abdominals as you swing the arms upwards, bending at the elbows to take the ball behind your head. Shift the weight onto your back foot and step forward with that foot as you throw the