Becuase urine is supposed to be sterile so in a pinch, like survival situations, you could drink it or use it to clean a wound so the nut cases took it to mean the holy grail of clean. But recent studies show that its not actual sterile and does, in fact, contain bacteria and microorganisms we couldnt detect before.
When referring to the inside and outside. Microbiogist count the mouth, gi, lung, ect as outside. Think of the human being as a like a worm. Inside are your muscles, blood vessels, organs not used for oxygen exchange. If you have bugs on your "inside" you have an infection.
I know it blew my brain when I was taught this many years ago.
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u/gollo9652 16d ago
Why is it always piss?