[laughs]

So good question, Wolfie.

We use mucus in our bodies a lot of different ways.

You usually only think about mucus in your nose, and in your nose it's helpful for fighting infections and cleaning the air that comes down through your nose to your lungs.

But we also have mucus in our digestive tract and in our eyes and in our lungs.

In the lungs it's really helpful to have some mucus, and in your lungs you have little hairs called cilia, and they move in a way to move the mucus up and out of your lungs.

So if there's any infection there, you can move it out of your body by coughing.

Is picking your nose a bad thing?