Reps: 20, alternating sides
- Lying on your back, extend your arms out to your side, to create an anchor. Lift your legs so your hips and knees are at 90 degree angles.
- Starting the movement from your core, rotate your knees to the left, hovering just off the floor. Hold for this position for three seconds. This completes one rep. Then, initiating the movement with your abs, slowly rotate your knees to the right.
Works: low abs while warming up the spine