The wind of the current health boom is blowing all over China, representing the good wishes of ordinary people for a healthy life, so was there a health boom in ancient times? The answer is clear, of course there was. For example, the art of “house-keeping” is still influencing people’s thinking until now. For example, the fallacy of “picking yin to make up for yang”, “one drop of sperm, ten drops of blood”, “losing sperm hurts the body”, etc., is derived from this. It is these views that make some men go to extremes at both ends of the scale, either as a wild horse, excessive indulgence; or adhering to the viewpoint of abstinence and sperm, living an ascetic life. So how much sex is normal for men? The first thing we need to understand is the composition of semen, which consists of sperm and seminal plasma. Sperm are produced by the testicles, matured in the epididymis and output through the vas deferens. Seminal plasma is mainly a mixture of fluids secreted by accessory glands such as the prostate, seminal vesicle and urethral bulb glands, and also includes a small amount of testicular fluid and epididymal fluid. The main chemical component of seminal plasma is water, accounting for about 90% or more, and other components include fat, protein particles, pigment particles, phospholipid vesicles, free amino acids, inorganic salts enzymes, sugars, etc. Therefore, the consumption of the body is very small for each semen discharge. And normal testicular tissue can produce hundreds of millions of sperm per day, which can supplement the consumption of sperm excretion. If you know this, you will not be confused about the number of times you have sex. American sex experts have proposed a sex frequency formula, that is, “sex frequency = the first digit of age × 9”, to the tenth digit of age multiplied by nine, the product of the tenth digit for the cycle, the single digit for the number of sex. For example, 20 to 29-year-old people, the number of sex 2 × 9, equal to 18, that is, 10 days in sex 8 times; 30 to 39-year-old people, that is, 3 × 9, equal to 27, that is, 20 days of sex 7 times. The number of intercourse mentioned above is only the general statistics, higher or lower than these numbers is not abnormal. However, in the next day after intercourse, if you feel sore, tired and weak, soft feet, etc., it means that the number of times is too frequent, to properly extend the interval between sex. If the body is good, strong libido, after sex and no discomfort, then, the frequency of sex more than the above statistics is no problem. Only the number of sex suitable for their own body is reasonable, which requires the couple to explore each other for a long time. So what to pay attention to when having intercourse? 1, when the emotional abnormalities should not have intercourse When the person’s emotional abnormalities, such as anger, tension and other states, will make the human sex hormone levels drop, which is involved in the neuro-hormonal regulation of abnormalities, resulting in transient erectile dysfunction, causing adverse consequences for the male sexual experience. At the same time, due to emotional abnormalities, the sexual stimulus can not make an effective response, so that the sexual ability can not be fully reflected, affecting the quality of sexual life. 2, after exertion when it is not appropriate to have intercourse The saying goes, “a hundred miles of the house is sick, a hundred miles of the house is dead.” Sex is the whole body organs are fully involved in the exercise of a large number of activities, the same room when the heart rate increases, heartbeat increases, blood circulation accelerates, consuming a lot of physical strength. And a long journey, or heavy work, or after strenuous exercise, the body is exhausted, the urgent need to rest, if at this time forced into the room, will certainly damage the body, and even cause cardiac arrest, resulting in sudden death. 3, drunkenness is not suitable for intercourse drunkenness room is the taboo of housing, although some people believe that wine can help sex, but alcohol can cause accelerated blood flow, blood pressure, coupled with the stimulation of sexual excitement, easily induced cardiovascular disease. At the same time, the paralyzing effect of alcohol will inhibit the brain center and reduce the sensitivity of the glans, thus prolonging the ejaculation time. But neural inhibition will also make people in a “numb” state, can not fully feel the pleasure of sex, coupled with alcohol erectile function is often poor, alcohol physical movements may also be more violent, on the sex life is not beneficial. 4, during illness should not have intercourse sick people, the body itself is not enough, need to recuperate, slowly recover, if the sick intercourse, it will damage the vitality, aggravate the disease. Especially in the recovery phase of the disease, more should avoid intercourse, otherwise it will lead to the recurrence of old diseases, the heavier the condition worsens, life-threatening.