How could biting your nails make you sick?
What is the purpose of finger & toenails?\xa0If nails are made of dead cells, how do they grow?\xa0How do your nails reveal what's going on inside of you? For free home activities sign-up at www.WhoSmarted.com\nSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.