Oblique to Vertical Leg Crunch

Lie faceup on a mat, with your knees bent at 90 degrees, calves parallel to the floor. Place your hands lightly behind your head and lift your shoulders from the ground; at the same time, twist through your waist to direct your right elbow toward your left knee. Lower your shoulders and repeat, this time bringing your left elbow toward your right knee. Next, return your shoulders to the floor and point your feet toward the ceiling; crunch up once again to complete one rep. Repeat from the top for two to three sets of 10 to 15 reps. -Oxygen Magazine