Article: Some find ab gadgets' claims hard to stomach.

Byline: Lisa Liddane

A new slew of devices promises to give you better-looking abs _ just in time to target post-holiday remorse from weight gain and lack of exercise. They're sold mostly through TV "infomercials" under names such as AbTronic, Ab Energizer and others.

These devices use EMS _ electrical muscle stimulation. Electrical impulses travel from the devices to the abdominal muscles and stimulate them.

How they work: Apply gel or water to the side of the belt that touches your skin, strap on the belt, flip the switch or press the button, and voila, you get a workout without a single rep.

Or so they say. Some debate the claims.

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