Bicycle Kick

This exercise targets your obliques like few crunches can, while still toning your rectus abdominals.
Bicycle Kick
  1. Lie faceup on floor, with legs together and extended, hands behind head, elbows out to sides.
  2. Crunch up slightly with lower body, as you lift legs about one foot off floor.
  3. Keeping both legs lifted, rotate torso to left as you bring left knee in toward chest to meet right elbow, right leg extended.
  4. Switch sides and repeat.
  5. Continue alternating from side to side.