A ball exercise that works the core muscles by challenging the stability of one’s core.
Stand in a high plank position, with your hands on the floor underneath the shoulders and your feet on a stability ball.
Keep your elbows straight and the shoulders down.
Hold your back straight and core tight. Slowly tuck your knees to roll the ball toward your chest.
Hold the position for a few seconds and then return to the start position in a controlled movement.
