I used to. My nails seems like they grow too fast. I may at times bite them down. But most of the time I just clip them. I don't like having long nails. Everyone else likes them though. But I used to always bite my nails. Mostly because I had anxiety, but they also used to grow weak, and I hated my long nails back then too. Now they grow stronger, and it's hard for me to bite them now.