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Yearlong (Ph IV, W I)

4B Swiss-Ball Crunch

Sets: 3 Reps: 12-15, 8-12, 6

Lie back on a Swiss ball so that your hips are supported and allow your abs to stretch. Tuck your chin to your chest and crunch your rib cage toward your pelvis. You can add weight on subsequent sets if your body weight alone allows you to complete the reps easily.


Exercise Step: