Other things you want to look at is your psychological state. The average male stoneforce just doesn't produce enough semen to experience a mind numbing orgasm every time they have sex. A decrease of male libido could the main cause of a sexual problem.
If a man feels that his size is not adequate enough to satisfy his partner intimately, stoneforce then he has the option to take a supplement. The additional benefit of increasing blood flow to the penis is to cause erections that are harder and longer lasting. But the actual fact is that penile enlargement is possible and easy to achieve - even without having to go under the knife!
They may just want to have some extra fun with their partners that they want to prolong their stoneforce erection further by taking some supplements, either in the form of synthetic or herbal products. A few years ago men could use only weights and pumps. If one wears them often enough the organ will stretch out, gaining length.