Slim and tighten your abdominal muscles with this small yet super-effective exercise. Remember to perform these movements with slow, controlled effort. The longer you can hold the "lift," the more benefit you'll receive.

1 Lie on your back on a mat or a padded surface. Place your hands behind your head and raise your legs above your hips. Your knees can bend slightly if your hamstrings are tight.

2 Maintain your balance as you slowly move your arms out in front of you with your palms facing inward. Keep the top of your shoulders pressing down and away from your ears. Raise your sternum without arching your back. Hold this position for three to six breaths.

This article originally appeared in the Los Angeles Times in the "Good Form" feature of the Health Section. "Good Form" is updated with a new Karen Voight article each Monday.