Does masturbation affect your growth if you are not yet fully grown?
Nope, masturbation does not stunt growth. Neither your penis or vulva, nor any other part of your body, including your height, is affected. Masturbation also does not cause blindness, hairy palms, or insanity, as some people have heard.
In fact, masturbation is normal and even healthy! While masturbation can be many different things to many different people, typically, it causes pleasurable, soothing, exciting, orgasmic, and, ultimately, relaxing sensations.
For more information on masturbation, check out the Go Ask Alice! masturbation archives.