We need to talk about tongues. Now, now, head outta the gutter, I’m talking oral health, not oral . . . oh, whatevs! Basically, we need to brush our tongues. Night and day. Bacteria can build up, causing bad breath, and a build-up of plaque causes tooth decay and gum disease. Don’t bother with a fancy tongue-scraping thingy, use your toothbrush.