Exercise of the Week: Reverse Crunch with Exercise Ball plus Oblique Twist

Difficulty: Easy to moderate

Start: Lie on back with hands behind head, elbows out. Position ball behind legs so it can be lifted off floor with hamstrings/adductors.

Exercise: Lift ball just off floor. Pull stomach inward while inhaling. As you exhale, simultaneously bring knees up toward chest and try to touch right elbow to left knee. Pause, then return to starting position. Switch sides. Repeat 10 times.