I actually read an article about this a couple of years ago. Apparently a lot of people do it. As a former science geek, I am not really sure what the nutritional value is given the fact that your body has already taken all the nutrients from it and the rest is waste.
But I did think of something ironic. I have heard of people who's breath smells like shit, but have you ever known someone who's breath smells like piss? My advice is if you ever meet him in person, cover your noses.
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