One minute, your penis is at ease. The next, something is arousing you (if you’re married, let’s hope it’s your wife), and suddenly your soldier is standing up and saluting. What happened? Your brain sent a signal to your central nervous system, releasing a compound called nitric oxide. This compound stimulates the smooth muscles of your penis to relax, allowing blood to flow into tiny, tiny pools. The veins around these chambers get squeezed by these expanding pools of blood, so the blood can’t escape. Your penis gets erect. If you’re really lucky, it stays that way until you ejaculate.
It’s a beautiful symphony! But just like the Philharmonic, an ejaculation can get interrupted. In the concert hall, it might be a cough, or a loud candy wrapper. In your body, many things get in the way. If you are overweight, don’t exercise much, smoke, or have cardiovascular problems, your blood may not be flowing easily. Your arteries may not dilate properly because they are inflamed or clogged. If the inner lining of your arteries is damaged by cardiovascular disease, you don’t make nitric oxide as easily -- no matter what your brain is telling you to do (not to mention the lovely lady next to you in bed).
Every man finds that his symphony gets interrupted once in a while. But if this is happening to you more than half the time you attempt an erection, talk to your doc about underlying reasons that may interfering. Think of your penis as a dipstick for your health. A problem with erections may be nature’s way of telling you to take better care of your heart and your health.