Year Long Workout: Phase VII, Workout B
3B Swiss-Ball Jackknife
Sets: 3 Reps: 8-12 Tempo: 232 Rest: 60 Seconds
Get into pushup position and rest your feet on a Swiss ball [1]. Contract your abs and bend your hips and knees to roll the ball toward you, keeping your back flat [2]. Reverse the motion to return to the starting position. That's one rep.
