Why do I have a penis erection in the middle of the night?

Everyone knows that many men will have erections at night. This is a very normal phenomenon, and this erection phenomenon will even last until the early morning, so it is also called morning erection. Normal men will have this situation, especially men in adolescence, who are just developing, and this phenomenon will be more intense. So what is the matter with the penis erection in the middle of the night?

Normal men will have morning erections or night erections. Morning erections refer to the erection of the penis when a man wakes up in the morning, while night erections refer to the automatic erection of the penis when a man falls asleep at night. If a man does not have morning erections or night erections, there may be something wrong with his reproductive system. So why do men have night erections or morning erections? Let's find out together!

(1) The internal organs are controlled by the sympathetic and parasympathetic nerves, and the sexual organs are no exception. Penile erection is controlled by the sacral parasympathetic nerves. When the parasympathetic nerves are excited, the penis will erect.

(2) Both the sympathetic and parasympathetic nerves have a certain degree of tension (i.e., a weak but persistent excitement), and they oppose each other like seesaws. When the sympathetic nerves are excited, the parasympathetic nerves are relatively inhibited.

(3) During the day, the sympathetic nervous system is relatively dominant under various stimuli from the environment. At night, when we are quiet and sleeping, especially during parasympathetic sleep, the parasympathetic nervous system is dominant, resulting in male penis erection and female vulva congestion.

There are two sayings in the folk saying: "Men pick up their pens at midnight, and women's lotus flowers bloom at midnight." This shows that our ancestors had already observed this physiological phenomenon.

Warm reminder: People who have nocturnal erections or morning erections generally have good sexual abilities, so don’t worry about this normal physiological phenomenon. Just do what you usually do. On the contrary, those who don’t have nocturnal erections or morning erections should see a andrologist.