Masturbation is good for you -- although, like anything, moderation is best. By masturbating you'll learn how your body works, so that if/when you choose to have a sexual partner, you can be confident of the way your body works. It also sends you a pleasant rush of endorphins... And if you come, it's natural to feel sleepy afterwards, cuz of these endorphins.

I say, masturbate to your heart's desire, and be choosy about who you shack up with. Be proud of your body!