A) Masturbation is bad for your health.
This myth originated with an anti-masturbation tract that was written in 1712 as a way to sell a bogus "tonic" that was supposed to stop the disease of "self-pollution". Through the years there have been many colorful attempts to pathologize masturbation. They say it will make you go blind, it will give you acne, and it will grow hair on your palms. All claims that have been refuted by science. Today virtually all physicians and scholars agree that masturbation is harmless.