Nose
While we’d never tell you not to blow your runny nose, there is a good reason why we’d tell you to stop digging for gold (even though no one is looking). Sticking your finger in your nose can lead to tiny scratches inside your schnoz, according to Dr. Voigt.
Some blood might come out, which is the perfect food for germs, and as a matter of fact, you can actually increase the crusting and the irritation if you’re picking your nose. If you need to clear things out, just blow into a tissue one nostril at a time, to reduce the pressure of a clogged up nose.