Want six-pack abs? Try crunches, one of the common abdominal exercises. It activate the rectus abdominis muscle and the external oblique better than any other common core exercise. Unlike the sit-up, except that instead of lifting your entire back off the floor, you only lift your upper back. The movement begins by curling the shoulders towards the pelvis, the hands can be behind, beside the neck or crossed over the chest. Focus on bringing your ribs down to your belly button. It will raise your chest a few inches off of the ground. That little motion is all you need to target your abs.
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