Why does the male penis have an erection for no reason? Three kinds of food make your penis harder and harder

1. Why does the penis have an erection for no reason

Penile erection is an instinct of human beings, sometimes not determined by human will, but caused by a series of reflex activities. Under normal circumstances, when a man is sexually excited, his penis will erect; After the sexual impulse subsides, the penis will return to a weak state. Under physiological conditions, from a child or two years old to the elderly, penile erection will occur. Teenagers are in the period of puberty, and penis erection is more frequent. As we have already known, the reason why the penis is erect and weak is related to its anatomical structure and physiological function.

After teenagers enter the puberty stage, due to the awakening of sexual consciousness and the emergence of sexual psychology, they will have certain sexual impulse and desire.

2. The number of erections varies with age

Adolescent adolescents can erect about 6 times per night on average, and each erection lasts about 20-30 minutes; young adults can erect once every 1-1.5 hours on average; After middle age, the number of penile erections will decrease; A healthy 65-year-old can still have several erections every night. Just because these erections occur during sleep, the person concerned is not aware of it.

3. Method of measuring penis size

The scientific way to measure the length of the penis should be the length from the pubis to the glans.

There are two methods commonly used by doctors:

First, the measurement of the length of the non-erect penis: at room temperature of 18 ℃, take an upright position, lift the penis at 90 ° to the body, and measure the length from the pubic symphysis above the penis to the top of the penis head with a ruler.

Second, the measurement of the length of the erect penis: take an upright position, hold the penis head with your hand and pull it forward until it cannot be extended, and measure the length from the pubic symphysis to the penis head with a ruler (the length after pulling is basically the same as the length of the erection).

The International Male Health Organization (MTD) has obtained the formula to calculate whether the penis size is normal through nearly 30 years of research (Asia):

Normal penis length M=(height T-105) * 0.618/3.14 (cm) Normal penis diameter D=M/3.14 (cm) (Europe and America=Asia/1.414/0.618) cm.

The above formula is only calculated based on most statistics, and the actual data shows that there is no relationship between penis length and height. The size of penis is closely related to race and heredity.