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.
You will need to commit to a couple of days each week where you use the Contour Abs belt to work on your abdomen muscles. Take your time to learn where to place the belt for maximum effect and enjoy the reps at strengths of your choice.