Working your back muscles is a must, and this move will also tone your glutes and hamstrings.
- Lie on your belly, and hold an exercise ball between your feet. Engage your abs, and extend your arms straight out in front of you.
- As you inhale, squeeze the ball, and lift your knees, arms, and chest off the floor. Hold for a count of 10, and then slowly release your body back to the floor.
- Repeat for a total of 10 lifts.