Why it's bad: Some side effects of this habit, like an aching jaw and headaches, happen immediately. Others, like worn-down teeth, occur over time.
How to stop it: Teeth grinding is often a result of stress, so try teaching your tot some relaxation techniques. Whether it’s kid-friendly yoga in the afternoon or a mini massage before bedtime, these activities could curb the grind. But if the habit continues, ask the dentist to fit your child for a mouth guard. It won’t stop the grinding, but will minimize wear and tear on their teeth.