There is this whole myth that states that excessive masturbation causes the knee to become weaker. Apparently because sperm is produced in the knee-cap area.
A friend once asked me if I masturbated a lot, and then he told me to relax. He then touched my knee-cap and it turned out to be very loose, as opposed to his which wasn't. He said that it was because of excessive masturbation.
Can someone shed some light on this? Is it true? or is it just a bunch of stupid anti-masturbation stigmatizing myths.