HOW: Begin this exercise laying on your back with your knees bent, feet resting comfortably on the ground, and a swiss ball lying on your stomach. From here, gently flatten your back on the ground and straighten your arms resting them on the swiss ball. Keeping your arms straight, push down into the ball to engage the core.
FEEL: You should feel your core muscles engage as you perform this exercise.
COMPENSATION: Avoid arching the back while performing this exercise. Keep your core engaged and your back resting comfortably on the ground.