Maybe this will help those who are trying to stop biting their nails.
I heard this from Whoopi Goldberg on The View. Another woman was trying to stop biting her nails. Whoopi asked her how many times a day she went to the bathroom (you know, #2) and did she wash her hands afterwards.
Of course, she did.
But the kicker was "Do you scrub under your nails with a nail brush every time after you go to the bathroom?"
Of course, she didn't.
Ewww

That would make me stop biting my nails! Hope this helps.