After sex, many men will feel tired, and some will also experience muscle soreness. American sexual health expert Amy Penter points out in her new book "Perfect Sex" that men must learn to adjust themselves after sex.

During sexual intercourse, men will experience physiological phenomena such as accelerated heartbeat, increased blood pressure, accelerated breathing, dilation of blood vessels throughout the body, and increased perspiration from the sexual excitement stage to the climax stage. These physiological activities will inevitably accelerate physical energy consumption and enhance metabolism. For men, the feeling of fatigue after sex is mainly the result of the relaxation of the cerebral spinal reflex function that controls the discharge of semen immediately after ejaculation. This relaxation time is related to age and physical condition. Young people and people who exercise regularly recover faster.

Amy said that proper stretching of the spine after sex can enhance the motor function of spinal nerves and help eliminate fatigue. Therefore, men might as well stretch a few times on the bed, or arch their backs first and then relax.