Michael Sirigoliano, a professor of medicine at the University of Pennsylvania in the United States, said: "Sexual life is a physical exercise." In terms of a one-time life alone, it seems that the physical fitness of the person is insignificant. But remember the revelation of the Egyptian pyramid: every stone is very ordinary, but together they create a miracle on earth.

If you have sex three times a week (the usual frequency of healthy couples), you can burn up to 7,500 calories a year. This is equivalent to jogging 120 kilometers a year, and the sentimental effect of sex life is unmatched by jogging. If the weekly calorie consumption can reach 10,000 calories, roughly estimate this is equivalent to running Tianjin from Beijing at a speed of 1.6 km per 10 minutes.

In addition to calorie consumption and weight loss, sex life also helps to strengthen people's physical strength - Michael pointed out: "In sexual arousal and orgasm, accompanied by muscle contraction and relaxation. The higher the quality of sexual life, enhance physical strength The better the effect.” However, he cautions people not to be overly addicted. “As with any kind of super-strength physical exercise, too much sexual activity can lead to injuries, such as muscle fatigue.”

As far as men are concerned, “any kind of physical exercise can increase testosterone.” Karen Donasi, head of clinical research at the University of Northwestern Medical School’s “Sex and Marriage Adjustment”, believes that sexual life is not exception. This magical male "honey juice" has many effects on physical and mental health. It maintains sexual drive and contributes to bone and muscle development. In the case of women, “regular sex can increase estrogen levels.” Karen emphasizes that this hormone protects the heart of women and maintains vaginal tissue. Regular sexual life also helps to alleviate or eliminate women's premenstrual syndrome.

Physical exercise can make people feel mentally rested, thus relieving psychological stress. Karen said: "Sexual life can also be an effective way to reduce the level of nervousness." She believes that sex can help both husband and wife to eliminate cold, full of joy, intimacy and ease. Because psychological stress can weaken the body's immune system, relieving these stresses through sex life can help people reduce their disease.

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