The average square centimeter of your skin is home to about 50,000,000 bacteria. I know, I know…ew. Fortunately, most of them can’t hurt us. Want to know what’s even more gross? Other microorganisms, like mites and lice, make their homes on our bodies as well. Our bodies are like mini-Earths, with different habitats that house different creatures. Which areas of our bodies do you think house the most bacteria?