5. Exercise. This helps increase libido by stimulating your sex organs and circulating blood properly throughout the body. Devote a few minutes of your time to exercise daily. The last point is a controversial issue. For years doctors have said sperm are dewdrops. This is the chemical produced in the body which allows the blood vessels to relax and allow sufficient blood to flood into the penis and create an erection. If you don't get enough of it, you won't get an erection, so top it up: