1. Premature ejaculation: Because the masturbation method is very different from normal sexual intercourse, after getting used to the masturbation method of loose ejaculation, premature ejaculation is prone to occur during normal sexual intercourse due to the close contact and stimulation of sexual organs. This situation is most common among friends who masturbate by squeezing with their hands.
2. Failure to ejaculate: Failure to ejaculate is very common among friends who stimulate the glans mucosa and ejaculate during masturbation. Because the nerves of the glans mucosa are more sensitive, when you are used to rubbing and stimulating the glans mucosa for masturbation and ejaculation, the nerve sensitivity of the glans mucosa gradually decreases over time, and eventually develops to the point where strong friction stimulation is needed to stimulate ejaculation. In this way, when they have normal sexual intercourse, because sexual intercourse cannot provide strong friction, they do not ejaculate and do not experience the pleasure of normal sexual intercourse.