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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.
a tight belt or waist also magnifies bowel discomfort and stomachaches there was even a theory that tight belts contributed to rising esophageal cancer rates suspicious europeans were blaming a societal shift to belts from suspenders but a new swedish study debunks that idea you should be able to comfortably slide two stacked fingers between your waistband and skin