Muscle Groups Worked in This Exercise: Obliques and Lower Back
Preparation: Stand straight up with back and head, holding a medicine ball extended straight out from your core front region. Make sure that your elbows are slightly bent and you keep your head and back straight during the entire exercise movement.
Breathing: Breath out on the contraction of the muscle and breath back in on the way back to the start position.
Lie face up on floor, knees bent with feet on floor and neck straight. Grasp medicine ball and hold at chest level. In a controlled motion, keeping neck straight, curl upper body up. From this position, twist your torso to the left. Contract abdominals fully without compromising form. While maintaining the controlled motion, return to starting position and continue through to your right side. Focus on really twisting your torso and feeling the contraction when twisiting your torso.