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.
If your drive belt is damaged, donât take chances. You could drive for miles without a problem, or you could end up stranded by the side of the road. Worst case scenario, a damaged belt could cause extensive damage to other vehicle components. When in doubt, itâs best to replace. drive belts (ex. serpentine, v-belt)