Is it good for a man to have an erection all the time?

One of the biggest differences between the male and female body structures is that the male body has a penis, and when the male body has some physical desires, the normal male penis will be erect. When the erection occurs, the male needs to release it in time, otherwise it is very bad for his body to hold it back. But if a man's penis is always hard, is this good for his body?

This needs to be viewed separately. It is a normal male physiological activity. Don't be afraid. Every man has to go through it. Just figure out the reasons. It can be divided into the following three aspects.

1. Psychological erection

When a man's cerebral cortex is excited by the hearing, vision, smell, thinking, and imagination of sexual content, and the excitement is transmitted through the erection center of the thoracolumbar segment of the spinal cord and acts on the corpus cavernosum of the penis, the arteries will dilate and a large amount of blood will flow into the corpus cavernosum of the penis; when the veins contract and the blood outflow from the corpus cavernosum decreases, the blood will be fully retained in the rich blood vessels and blood sinuses in the corpus cavernosum, causing the penis to quickly produce a psychological erection. Conversely, when the arteries contract and the blood flowing into the corpus cavernosum of the penis decreases; the veins dilate and the rich blood flow retained in the corpus cavernosum quickly flows back, the penis will return to its flaccid state.

2. Reflex erection

When the external genitalia is subjected to local stimulation such as direct touch, friction from walking, or internal stimulation of the rectum and bladder, it can cause a reflex erection. This is achieved by stimulating the low-level erectile center in the sacral cord of the spinal cord and arousing its sexual excitement.

3. Nocturnal erections

In addition to psychological erections and reflex erections, normal men also have nocturnal erections. Men's sleep is always in the alternation of rapid eye movement sleep and slow eye movement sleep, and they also experience the physiological process of erection-fatigue-erection-fatigue again. This is called nocturnal erection of the penis in medicine, which is a normal physiological process of healthy men. Generally speaking, men will have 4 to 6 erections every night, each lasting 20 to 40 minutes, and the total erection can reach two and a half hours. This is because the brain always suppresses the occurrence of sexual reactions during the day, otherwise men will inevitably encounter embarrassing situations from time to time. However, after falling asleep, the inhibitory function of the brain disappears, and the penis will spontaneously have an erection reaction. This is completely normal and there is no need to worry.

The duration, frequency, and hardness of nocturnal erections decrease with age, and are strongest from puberty to around 20 years old.