Walnuts are fine. They supplement protein and zinc. If you want to have this effect, you should eat Maca. Nowadays, many men eat Maca. I have been eating it now. I have been eating it for a long time. This Yishu Tang) Maca card has been used. Now the body's desire is very strong, the kidneys are stronger, and sexual intercourse is very powerful. You can also eat it.