I chew on my fingertips and on the sides, as well as biting my nails, but the chewing more. I think it's just a symptom of my anxiety but people will see my fingers and ask, "what happened to your fingers?" "are you okay?" and I feel if I tell them the truth they'll think it's gross. which, to be honest, I kind of like doing it, it doesn't hurt, it's addicting. 

Does anybody else do this, or is it just me?