There are reasons why people "fall asleep immediately" after sex; it's not selfishness but rather physiological fatigue.
**Article 21**
There are reasons why people "fall asleep immediately after sex".
Guo Jun, Director of the Department of Andrology at Xiyuan Hospital of the China Academy of Chinese Medical Sciences: In daily life, we often hear women complain that their husbands fall asleep immediately after sex, completely disregarding their wives' emotional and physiological needs. So, why do men behave so "selfishly" during sex?
Actually, this is a misconception. Falling asleep immediately after sex isn't just a phenomenon among a few men; it's a common occurrence. Besides the intense pleasure it brings, sex also leaves men feeling exhausted, much like after running a marathon. During sex, the sympathetic nervous system is highly active, and various hormones, especially sex hormones, are secreted in abundance. At this time, not only are the sexual organs highly congested, but many bodily tissues also participate in this special physiological process from arousal to orgasm, such as increased heart rate, elevated blood pressure, deeper and faster breathing, dilation of blood vessels throughout the skin, and increased sweating. Therefore, the body's energy consumption increases significantly, metabolism is enhanced, and the brain and spinal cord, which control ejaculation, relax after ejaculation. Thus, men generally feel tired after sex.
Furthermore, in recent years, foreign scholars have discovered that melanocortin levels increase during penile erection. Melanocortin is a substance secreted by brain tissue. Under normal circumstances, its secretion peaks before falling asleep at night, primarily regulating sleep and inducing drowsiness to promote sleep. However, during sexual intercourse, the increase in melanocortin, which should occur during sleep at night, occurs earlier, essentially meaning the man takes a "sleeping pill" at the start of sexual activity. Coupled with the physical exertion, it's not surprising that he falls asleep immediately afterward. Clearly, this is not something men can control.
In addition, increased social pressure on men is also a major reason. With continuous economic development and rising living standards, the pace of life is accelerating. Men sacrifice everything for their families, careers, wives and children, and a better living environment. During the day, they face various social obligations, and some work like workaholics, arriving home exhausted both physically and mentally. The need for men to be cared for and cherished has become a call of our times.
It is generally believed that men and women have significant differences in their sexual response cycles. Men should provide appropriate caresses to their partners after sex to enhance their sexual pleasure. However, men also need to restore their physical strength and energy to prepare for future sexual activity. Therefore, a woman's warm embrace is a refueling station for male sexual performance, and falling asleep during caresses replenishes a man's energy for love.