Want to sleep after ejaculation is due to the body’s secretion of pineal gland hormone, fatigue, vagus nerve low and so on under the joint effect of a symptom, is a normal phenomenon. Men in sexual intercourse when the body will produce a large number of pineal gland hormone (also known as melatonin), and this hormone has a certain hypnotic and tranquilizing effect. Ejaculation after sexual intercourse is a process of physical strength and energy consumption, so after ejaculation, the male body will feel fatigue, which is the body’s normal reaction. When having sexual intercourse, sympathetic nerve activity of vagus nerve will be low after extreme excitement, which is also one of the reasons affecting wanting to sleep. When men want to sleep after ejaculation, they have to rest properly, do not be strong, to avoid leading to other abnormalities in the body. In addition, try not to have sex again in a short time after ejaculation.