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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.
Ab Crunch Machine. The most widely known machine at the gym to get rid of belly fat is the ab crunch machine. This machine provides constant resistance while you work your belly in a crunch fashion. The ab machine allows you to adjust the intensity to your level. Sit at the machine, grasp the handles and position your feet under the roller pad.