Come to a tall kneeling position on the ground and place an exercise ball in front of you. Brace your core as you place your forearms on the ball. Begin the movement by slowly rolling forward with the ball. Feel the contraction of your core as you move further out. Be sure to keep a neutral spine throughout the movement; keeping your hips, knees and spine in alignment. Once you are fully extended, pause, then slowly roll back up to the starting position. Rely on your core muscles to roll you out and pull you back in.