Why does a man's penis get hard?

In sex life, whether the man's penis is hard or not is closely related to the success of the intercourse. In real life, most women still do not know much about the man's penis due to the influence of traditional concepts. They always think that the man's penis is mysterious. In fact, after marriage, everything will change. You still need to know what you should know. So, why does the man's penis become hard?

The penis is one of the main parts of the male external genitalia and is also the sexual organ of both sexes. When a man stands, the relaxed penis hangs down. There is a thin cavernous artery in the cavernous body of the man's penis. When it is engorged with blood and blood is perfused into the cavernous body, the erection phenomenon we see will occur. When touched or stimulated in a certain way, such a physiological reaction will also occur. Through masturbation or sexual stimulation, the man's penis will form a complete neural reflex arc through the primary erection center. Blood enters the blood vessels of the penis, causing the cavernous body of the penis to compress the venous blood vessels, and the blood cannot flow back, thereby causing the penis to erect, which can last for a considerable period of time and complete sexual intercourse.

The main reasons why men cannot get an erection are:

1. Bad living habits: Some bad living habits will affect men's erectile function. The main factors include alcoholism, smoking, excessive nightlife, obesity and other factors.

2. Organic factors: This aspect mainly causes diabetes, hypertension, spinal cord injury, hypothyroidism, hypogonadism, etc., all of which can lead to the phenomenon of penis being erect but not hard.

3. Psychological factors: Because men are under too much mental pressure, it is easier to affect the release of central nervous system transmitters, resulting in imbalance of sympathetic nerve excitement and endocrine hormone regulation, which will make the penis erection not hard enough. In addition, some sexual ignorance or wrong education, emotional disharmony between family members, etc., will also affect the occurrence of penis erection.