Why do boners go up

Sexual arousal is often the reason, which is caused by seeing, feeling, or even thinking of something that turns you on. Erections can also happen for no particular reason. To know how an erection works, we need to start with a little lesson on penis anatomy. There are two chambers that run the length of your penis called the corpora cavernosa. Each contains a maze of blood vessels that create sponge-like spaces. When those blood vessels relax and open, blood rushes through and fills them, causing the penis to engorge, creating an erection.

When you get aroused, your brain sends signals to your penis that cause the muscles in it to relax and let the blood in. That said, certain lifestyle factors can make it difficult for you to get an erection, like being tired, stressed, or intoxicated.

Certain medications and medical conditions can also cause erectile dysfunction. Pee boners are an example of this. They happen because your penis is designed to not let you wet yourself. Excessive or especially vigorous masturbation can also cause some discomfort down there.

Otherwise, an underlying medical condition or injury can cause painful erections. If you have penis pain , a trip to a healthcare provider is in order.

Those are all signs of an STI or other infection. Because each guy is different, it's impossible to say what's a "normal" number of erections. Some guys experience many erections each day, whereas others may not experience any. Hormones fluctuate with age, sexual maturity, level of activity, and even the amount of sleep a guy gets. Unless your erections are causing you discomfort or pain, don't worry about how many you get.

If you're concerned, talk to your doctor, who can answer your questions and probably put your mind at ease. His penis starts to swell. As arousal continues, nerves keep carrying messages of arousal between the penis and brain. Blood keeps moving into the man's penis.

Blood-swollen tissues press against the veins. Figure 2 Open arteries allow more blood to enter the corpora cavernosa. Figure 3 When your brain stops sending signals that indicate sexual arousal, the hormonal response ends. The blood flow to your penis is inadequate. High blood pressure, heart disease, high cholesterol and diabetes can all affect blood flow to the penis, making erections difficult to achieve.

Your erectile tissue is damaged. This can happen when a man has undergone radiation treatment for prostate or bladder cancer. Erectile Dysfunction treatment options ». Erectile Dysfunction.