 By not brushing your tongue, you'll be hurting your brain. Bacteria loves your tongue, like a lot. Not all are bad, but this one definitely is. And studies show that it can make its way to our brains. Once there, it can cause memory loss by releasing enzymes that kill nerves. In fact, a recent study showed high levels of these enzymes in the brains of deceased Alzheimer's patients. The good news is cleaning your tongue regularly can reduce the amount of bacteria. Listen y'all, our tongues deserve better and so do our brains.