HOW: Place the front of your lower legs on top of the swissball. Place your hands down on the ground with your elbows extended. Push down into the swissball with your lower legs/ankles bringing your hips up into the plank position. Make sure you are in a stable plank position with your legs together. Once stable, bring your knees to your chest while pushing down into the ball rolling it back and forth.
FEEL: You should feel this in your core muscles. You should also feel this in your hip flexors and shoulders.
COMPENSATION: Keep your back flat while you roll the ball up. Make sure you’re applying the same amount of pressure with both legs on the ball as your roll it. Don’t shift your upper body to either side. Stay centered.