Things might get ugly, but at least you’ll have had a head start on going cold turkey.
With fingernails, though, what are you going to do, wear gloves 24/7?
Well, that’s kind of a game-changer, isn’t it?

For one thing, it kind of takes out of play the whole nail-biting suspense trope.
A buttocks-clencher, perhaps?
One positive result of this study is that no longer can we look down on nail-biters as nervous Nellies.

Instead, they are would-be world-conquerors who are merely chagrined by an enforced wait at the DMV.