This scissor move tones your abs and your obliques.
-The Rockette: Lie down on your back. Place your hands behind your head, elbows-wide. Pulling in your abs, lift your head, neck, and shoulders off the floor. Then lift your legs straight up. Now, twist your right shoulder over to your left leg as you lower your right leg. Come back to center. Then twist your left shoulder to your right leg as you lower your left leg. Scissor back and forth for 20 counts, then lower back to start. This move works your abs and obliques.