Penile erection is a natural instinct of men, but it contains a lot of interesting knowledge and phenomena. American urologists reveal the "secret of the penis". There are two types of penis erections in men. One is nocturnal erection, which is a normal physiological phenomenon like breathing and sweating. Of the 24 hours in a day, nighttime is the peak time for penile erection. Surveys show that adolescent boys can have about 6 erections per night, each lasting about 20-30 minutes; this is even more common in young and middle-aged men, with an average of one erection every 90 minutes per night; after middle age, the number gradually decreases, and healthy elderly people over 60 years old can still have one erection per night. Sefei.com Another type of erection is caused by physiological or psychological sexual stimulation, such as stimulation from the opposite sex, stimulation from sexual content in movies, TV shows, books and magazines, etc., which is the erection before ejaculation. It is estimated that the average man has an erection and ejaculates 7,200 times in his lifetime. Among them, an average of 2,000 ejaculations can be achieved through masturbation. Under normal circumstances, the duration of penile erection varies, ranging from a few minutes to more than an hour. If the erection lasts too long, more than 4 hours, and is limited to the corpus cavernosum, it is an abnormal penile erection. The report also pointed out that the average length of a man's penis when not erect is 8.9 cm, while the average length when erect is 13 cm. Almost all men's penises shrink a little when they shower. According to records, the shortest penis in human history is only 1.6 cm, and the longest is 28 cm. |
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