I liked how well the product works and how much longer I lasted also, not just how long I lasted how firm I was. We did it morning evening and night for 3 days in a row, overall very satisfied with this product.
It takes a cpl of hours to feel the effects, but when it does, watch out. I've tried a cpl of others on the market, and this is definitely one of the best. Try it, and judge for yourself. You will not be disappointed!