Stand with your feet hip width apart with a soft bend in your knees. Hold a wall ball between both hands at core height and stand with your right side facing a wall, with roughly one to two feet's distance between yourself and the wall. Keeping your core braced, rotate your left hip away from the wall, bringing the ball with you. Explosively reverse the movement and release the ball from your hands, throwing it against the wall. Catch it with both hands as it bounces back and repeat the movement. Perform the required number or reps (or time) on one side before changing to the other.