13. Drinking Coffee or Tea
These caffeinated beverages may do wonders for your health in other ways, but they hit your mouth hard. High in acid and naturally dehydrating, they promote a decay-friendly environment in your mouth. They also stain teeth.
14. Playing Hard Sports Without a Mouth Guard
If you are seriously athletic, you may be taking out some of that energy via your jaw. Many active people work their jaw muscles without realizing it, grinding their teeth and causing other problems in the mouth. Get fitted for a mouth guard and eliminate the possibility.
