Exercise X: Swiss-Ball Crunch
Sets: 2 Reps: 30 Rest: 60 Seconds
Cross your arms over your chest and lie back on a Swiss ball . Tuck your chin to your chest and crunch your rib cage toward your pelvis . Lower your body to the starting position. That's one rep.
The Eternal Beach-Body Plan: Phase II was shot at Gold's Gym, Manhattan—Wall Street