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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.
From there, you can use your abdominal toning belt to start to define the abdominal muscles. By doing this, you're using the abdominal toning belt to compliment the rest of your hard work. An abdominal toning belt is not a miracle worker, but it can help you develop your abdominal muscles over time.