Body wear and tear

I don't know how many of you know this but if you do something for a long time your body makes adjustments. Like if you play a musical instrument for along time your fingers actually get a bit deformed to make it easier for you to play. If you corset a lot your rib cage bends and internal organs move. I think most authors don't think of this when they are writing their books. I am currently reading one author who did think of it a bit. Her werewolves all have calloused hands. So you can tell whether someone is a were based on whether they have calluses on their hands or not. I would think that if you constantly grew fangs over and over you would get gaps in your teeth and calluses on your gums. Of course gappy teeth wouldn't be very sexy.