This situation is caused by sexual repression or sexual impulses, sexual impulses usually refers to adolescent boys in the process of puberty development, due to androgen secretion level, so the sexual impulses are more frequent, in the sleep of the asexual dreams, as the saying goes, there is something to think about, there are dreams at night. Most of the sexual repression is a long time single, abstinent, no sex life of men, due to sexual desire can not be released, long-term accumulation will lead to the dream of spring dreams, this situation do not worry too much, because medical statistics say that about 80% of men have similar experiences, spring dreams will not bring harm to the body. Generally adolescent men with the maturation of sexual development, as well as the maturation of the body’s neurological development, will naturally disappear, sexual repression usually get the libido release after the situation will ease. This can be alleviated in other ways in daily life, such as by diverting attention, cultivating amateur interests, hobbies, or adjusting normal rest and rest time, and consuming excessive energy through sports, which can reduce the frequency of vernal dreams.