Many people think that sex is not need to learn will be things, in fact, not. Ancient monographs pointed out that: “people produce and do not study two, one said rest, two said food. Not these two, no non-study and service. Therefore, II born, food, Sun (loss) born, color. Is that the saints together men and women must be rules.” It means that there are two things in life that are learned without learning, one is breathing and the other is eating. Other than that, there is nothing else that one knows how to do without learning, practicing, and operating practice. Eating is good for survival, while lust may be detrimental to one’s health and longevity. That is why sages and sages must observe principles when engaging in intercourse between men and women. The ancients also said, “The affairs of the room can kill and give birth,” just as water can carry a boat and water can overturn it. Thus, the male and female copulation way, the smooth life extension, against the early decline and early death. Therefore, to learn the way of health, we must know what is appropriate in the room life, which should be taboo. First, the guidelines of the room health: Yuan dynasty medical doctors said: “desire can not be absolute, desire can not be early, desire can not be vertical, desire can not be strong.” Can be used as a room health guidelines. The desire can not be absolutely explains the necessity of the room; desire can not discuss the disadvantages of early marriage; desire can not be indulged in opposition to the indulgence of lust; desire can not be strong specifically refers to the room can not be strong, in order to prevent depletion of essence and kidney injury. This guideline still has practical value. Second, the necessary environment: the ancients have three taboos: “when to avoid the cold and heat, wind and rain, this day taboo; drunkenness, joy and anger, sadness, fear, this person taboo; mountains and rivers, gods and goddesses, gods and goddesses, wells and stoves, the place, the place of this place is also taboo. The room when to avoid these three taboos, to do the time, place and people and behavior.” “Bedroom intercourse, but also the most when you know the taboo”, pointing out that the bedroom should be quiet, bed to be comfortable, bedding sheets and pillowcases to be clean, the indoor air to circulate fresh, is a necessary condition for intercourse. Third, the preparation for intercourse: “want to join the way, is to set gas, peace of mind, and Zhi, three gas all to, the gods return.” The so-called fixed gas, peace of mind, that is, in the room before the presentation of peace of mind, steady steady hold, to avoid irritability and panic, worry and jealousy, anger and depression and other emotions. The so-called and Zhi, that is, men and women call, cooperate with the tacit understanding, sexy concentration, affection contract, mutual stimulation. Said: “Where the way of the woman, I want to first Xu Xu play so that God and the intention of feeling, a long time is to be handed over.” This is the modern sex medicine called “sexual preparation”, “sexual caress” stage. We should also follow this principle, do not “sudden storm”. Fourth, the appropriate time and direction of intercourse: “couples room, spring head towards the east, summer towards the south, autumn towards the west, winter towards the north; single day beneficial, double day loss; from midnight to noon beneficial, from noon to midnight before the damage …… This theory involves the yin and yang five elements, the human body’s biological clock, medical climatology, Heavenly Stems and Earthly Branches and other marginal science, to be further explored. According to foreign research, the best time for intercourse is the morning, when androgen secretion reaches its peak, the most energetic, intercourse can be more fun. Fifth, the frequency of sexual intercourse: “twenty years, often two days a Shi; thirty, three days a Shi; forty, four days a Shi; fifty, five days a Shi; over sixty to go, do not restore Shi diarrhea.” “People twenty years old, four days a leakage; thirty years old, eight days a leakage; forty years old, sixteen days a leakage; fifty years old, twenty days a leakage; sixty years old, that is, the Bi closed semen, do not reapply also. If the physical strength is still strong, a leak in January.” In fact, the frequency of intercourse should not be a uniform standard, depending on the person and different. The general rule is this: the newlyweds are more frequent intercourse; a few months after marriage, generally 2-3 times a week; with age will gradually reduce to 1-2 weeks 1 time; the weaker the number of times less; couples reunited with a long time to increase the frequency of sexual intercourse is human nature, but should be appropriately restrained. In short, should not feel fatigue to the extent.