There are millions in every drop of healthy semen. They move from the testicles to the seminal vesicles through tubes called the vas deferens. In the seminal vesicle, they mix with other fluids to form semen. Usually, a teaspoonful to a tablespoonful of semen is released at a time. Boys bodies make sperm all their lives.
New sperm develop every minute.
Sperm are absorbed by the body if they are not ejaculated. A Man's Reproductive System Wet dreams often come as a surprise. Most boys and men have wet dreams. This happens if they get erections and ejaculate during their sexual dreams. These dreams leave them wet or sticky around their bellies and penises.