Lie on ball on side of torso, waist, and hip. Position legs outward with feet on floor or against floor board. Raise side of torso up by lateral flexing waist. Lower torso back on ball and repeat. Position other side on ball and repeat with opposite side.
Start by lying on your back with your arms out at your sides and an exercise ball held up about 12 inches (30 cm) off the ground between your feet, your legs straight. Keep your arms extended and palms flat on the ground. This is your starting position. Slowly move your legs as far