Just thought that this would be appropriate here. The hymen is like a hair scrunchie in estrogenated woman "sexually developed". It is flexible for sex and the birth of babies. This is how the experts can most times see the damage done to young girls when they are not yet developed and have been raped. There are permanent telltale scars. Sometimes horrible scarring if you ever talk to a SANE nurse. A sexual assault nurse expert! These are the trails that rapists leave, and how they get caught, along with DNA. Think of it this way ladies. If you have sex with your significant other or hubby, and go to your doctor two days later, does he say, "What the H happened to you?" No, but in a young one, this would be red lights. Damage done skating or bike riding would be very rare if at all, and on the outside. Just something to think about.