Abs Exercise 33: Cross-legged oblique crunch (obliques)

Lie on your back, place your left foot flat on the floor and cross your right ankle over your bent left leg. Put your right arm straight out to the side with the palm of your hand set down on the floor and your left hand behind your head. Raise your left shoulder and twist your left elbow toward your right knee. Slowly return to the starting position and repeat. After completing the prescribed number of reps, switch leg and arm positions and repeat the exercise on the opposite side.