Yeah, I bite them, so I use fake nails to help grow them out and then when I have to take my nails off I put this nail polish on my nails that makes them taste like shit
I constantly bite my nails and the skin around my nails because "oh, I see a slight imperfection!" *one degloving later* "yo teacher can I have a bandaid"
I used to chew my nails too but i found it useful to paint my nails and put designs, it deterred me from chewing because i didnt wanna damage my hard work