What are boogers and what are they for?

What are boogers? Where do they come from? What do they for your body? Why do we like to pick them? Are they safe to eat? Find out all this and more and get your free activity guide at www.WhoSmarted.com   See omnystudio.com/listener for privacy information. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.