Half Wipers (Bent Leg)

Instructions

1. Lie on your back with arms extended out to your sides, knees bent and feet lifted so shins are parallel to the floor.
2. Keeping your shoulders flat, slowly lower both knees toward one side until they are halfway to the floor.
3. Contract your obliques to bring your knees back to center.
4. Lower to the opposite side and return to center; continue alternating for the desired reps.