Tribulus terrestris is the #1 selling testosterone booster, and the best example of a supplement that increases libido, but has no effect on testosterone.
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.
RE: Do ab workouts help lose belly fat, not just build muscle for the abdominals? Just wondering, some guy said that to get rid of belly fat, you needed to do cardio, and that ab exercises didn&#39;t matter as far as doing that. I sort of beg to differ, but does anyone know?