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Ab belts may cause muscle contractions if used properly. But the belt alone cannot produce six-pack abs. The real challenge to ab definition is the layer of fat that lies right under the skin, hiding muscle tone.
If so, you can buy toning straps for your arms, shorts for your butt, or a creepy headset for your face muscles (available in the United Kingdom for Â£250, or $385.YouTube). It's recommended that you use the belt four to five times a week, in 30-minute segments, cranking up the intensity level each time to the highest you're comfortable with. After four to eight weeks, you'll notice stronger and more toned abs. Not bad for $100 or $150 and zero bicycle sit-ups.