Adolescence is the period of physical and psychological growth between childhood and adulthood. With regard to male adolescents, masturbation-related myths may be the most frequently harbored. Male adolescents have a hormone-driven need to have sexual intercourse, frequently. Masturbation is a healthy, no-cost way to relieve sexual tension.A young man can masturbate virtually whenever he wants. Despite the guilt and misinformation implanted by adults that masturbation causes weakness, boys masturbate rather frequently. Also contrary to popular myth, the nocturnal emissions which may result in growing boys as a result of sexual excitement during a dream are completely normal and no reason for concern. Further, boys should not worry about penis size, for, when erect, they all work just fine. People grow at different rates. Menstruation starts when 17% of a woman's body weight is fat. The onset of menstruation may therefore start earlier in well-fed girls compared to in girls who are more lean. The frequency and duration of menses are not constant. Menstrual irregularity therefore does not necessarily mean that a young woman is pregnant or that professional medical treatment is required. Breasts, like penises, serve their intended function irrespective of size. The hymen is a membrane at the opening of the vagina. It may have a hole in the center or the side for the escape of menstrual blood. There are myths that an intact hymen is indicative of virginity, the hymen should be intact until marriage, and the first sexual experience should be painful for a woman. The hymen is elastic and even some prostitutes have been found to have intact hymens. The hymen also may tear due to a fall, cycling, or horse riding. Furthermore, myths exist that kissing can cause pregnancy or AIDS, homosexuality is abnormal and incompatible with heterosexual relationships later in life, and different positions of coitus may adversely affect physical health. Adolescents sorely need sources of sound scientific factual information to dispel their myths.