Just like brushing and flossing your teeth—to keep the bacteria away—the same goes for your tongue.
We all form coatings over our tongue through the anatomical features called papillae which trap microorganisms and oral debris consisting of food, saliva and dead epithelial cells.
A daily, gentle brush over with a tongue cleaner, tongue scraper or tongue brush will help clean this coating off the surface of the tongue.
The good news is that it might even help to reduce bad breath, tooth decay and gum disease.