Sleeplessness may be caused by long-term no sex life, sexual impulse before sleep or in dreams, etc. It may also be caused by autonomic dysfunction and other disease factors. 1. Long-term no sex life: If a normal teenage male or adult male, long-term no sex life, resulting in excessive semen in the seminal vesicles, then usually through the way of dreaming semen out of the body, is a normal physiological phenomenon; 2. Watching bad movie and television materials: if you are too excited before going to bed or in a dream, the sexual impulse may lead to increased excitation of the sex center nerves and sexual stimulation, and may appear in the case of ejaculation; 3. Autonomic nerve dysfunction: the autonomic nerves are innervated and regulated by the cerebral cortex, including the sympathetic and parasympathetic nerves. If the autonomic nerves are disturbed, it may lead to corresponding symptoms in many systems of the whole body, such as the reproductive system, and males may experience symptoms such as ejaculation and impotence, while females may experience irregular menstruation and dysmenorrhea, etc. If ejaculation occurs only occasionally, it is not a good sign. If you have occasional ejaculation, it is usually normal. If you have frequent ejaculation, you should go to the hospital in time to avoid delaying your condition.