“Sex” has always been a mysterious, seemingly unspeakable thing, and even more so for the Chinese people, it is a taboo matter to talk about. However, in recent years, many western things, even habits and concepts have been gradually introduced into China. There are different perceptions of sex, not only in the basic knowledge of sex, men and women also have different needs for sexual requirements or enjoyment. The pleasure of the boudoir is also diversified, the posture is even more strange, in the end, the sexual posture of sexual interest or male and female orgasm is related to it? In fact, sexual life or sexual enjoyment is like drinking water, warm and cold, sexual position is the same, depending on the person, and even due to time, due to place, due to mood may be different, and the distribution of each person’s sex zone is also different, most women have their own preference for the position. Some prefer the traditional male-on-female position, while others have to sit on top of the man in order to have an orgasm. It’s great if the man can cooperate. However, the most important thing is that both parties should have a consensus to find out the best way, for some patients with sexual dysfunction, once the position is changed, the erect penis will immediately soften, at this time, the woman should be a little more considerate, more gentle, coupled with timely treatment, even for the position of the special requirements of the female, can also be very good with. Some infertile couples, in order to have a boy or a girl, in the sexual position is quite research and attention, in the end, the sexual position is related to the conception or birth of a boy or a girl? In fact, sexual behavior, sperm and egg smooth combination is the first step to pregnancy, normal male ejaculation each time there are about 60 million sperm, steamroller in the sperm soldiers, fight bravely, across the cervix, arrived in the fallopian tube, in which only one champion can enter the egg to form a fertilized egg. Most of the ejaculation is in the vagina, at most, can only send semen to the cervix, so the posture of the sexual act and pregnancy is not related, the important thing is whether there is a sufficient number of normal live spermatozoa in the vagina. It is worth noting that some couples may accidentally get pregnant even if they do not ejaculate inside the vagina, as the spermatozoa may travel down the labia and into the vagina. People who like to sit on the mounted female on male should pay special attention not to move too much, with the whole body gravity suddenly pressed on the firm penis will often lead to penis fracture, if not treated immediately, the slightest will lead to future deformation of the penis, the serious impotence and regret for the rest of their lives. Like anal sex should be rinsed after anal sex, and then vaginal intercourse, because the anorectal part of a large number of E. coli bacteria, it is easy to cause cystitis or vaginitis in the woman after intercourse. In short, sex is a spontaneous behavior, natural and happy, the most important thing is that both parties are satisfied, pay attention to sexual cleanliness and safety, as far as possible, do not promiscuity, or to ensure safety with condoms, some difficult or dangerous behavior should be done according to their ability to have fun and safe sex is very easy.