No physically harmonious couple will break up over trivial matters; when they have perfect sex, the couple will not lose their temper over trivial matters, and will even talk about breaking up from time to time. At this time, they can appreciate each other's differences. ——American sex psychologist Mary Stopper The warmth that sex brings to people is not only the instant physical pleasure, but also comes from the harmony of the soul. According to a recent report in the American magazine "Psychology Today", the pleasure of orgasm is not a summer flower, it is fleeting, it can last for as long as two weeks. Tao Lin, president of the Shenzhen Sexology Society, told the Life Times reporter that according to the research of American sexology experts Master and Johnson, sexual response can be divided into four stages: sexual arousal, plateau period, climax and refractory period. Orgasm is the most primitive reaction of the brain and is the result of a large "burst" of neurochemicals. Without these substances, orgasm would be impossible. Neurochemicals subconsciously influence a person's behavior, mood, and cognition. There is evidence from multiple studies that post-orgasm sexual pleasure can last up to two weeks under the influence of neurochemicals. During this period, neurochemicals will form a dynamic balance: on the one hand, people will be satisfied with the last pleasure and full of happiness; on the other hand, lovers will be a little lost, extra sensitive and hungry for intimacy , will also be more repulsive to the opposite sex except for partners. These feelings will also stimulate them to get involved in sex again as soon as possible. In addition, the more intensive and frequent the climax is, the more obvious the emotional changes will be. A study in the United States showed that if women have more orgasms within 30 days, the greater the chance they will alienate male strangers and the higher their loyalty to their partners. Tao Lin pointed out that long-term lack of sexual life will lead to a decrease in dopamine levels in the body. At this time, people will feel that they have lost something, and may even relieve it by overeating. Nowadays, many sexologists have begun to recommend a sex technique called Karezza, believing that this is a good way to experience orgasm and maximize sexual pleasure. This posture requires a man to remain still for a period of time after entering a woman's body, focusing all his thoughts on the parts of his body that are in contact with his partner. If you find that the erection hardness has decreased, you can cooperate with each other's breathing and move slowly and evenly. During this process, the two tried to maintain eye contact. "It's a bit like yoga for two, because sex is a very good way to maintain health." said Stubbs, a doctor of psychology in India. "Karezza can bring special, high-quality sex to both men and women."

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