Photo by Foster Addington via Stocksy. My good friend Julia and I were at a sex-positive Halloween party when we heard about the Sync , a We-Vibe couples vibrator that allows your partner to control your vibrator from their phone while it's buzzing inside you. Sync is meant to make couples feel closer together when they're apart, so I, insufferable as ever, instinctively took a "Hey, that's disrespectful to single people!! Why should couples get yet another thing that single people can't have?

In it, John claims masturbation causes epilepsy, fainting spells, infertility, and stunted growth in children. Onania was an international bestseller. Some decades later, a Swiss doctor named Samuel-Auguste Tissot claimed semen was concentrated blood and that masturbating would lead to insanity and blindness. He also wrote a best-selling book, despite having no previous expertise on the subject.

Melissa Kang does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment. Masturbating has always seemed to be acceptable for boys, but less commonly discussed among girls. Is it normal for girls to masturbate and are there any health consequences? I am a girl who accidentally discovered how to masturbate when I was quite young and continued it on and off afterwards, should I be worried about this?