Scientific Reasons For B.S. Things Our Bodies Do
All those bizarre bodily quirks are there for science reasons.
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Contrary to popular belief, our bodily functions and common physical complaints are not the work of colonic goblins practicing sorcery deep in our lower large intestines. There's always a perfectly rational explanation behind the anatomical conundrums than remain a mystery to everyone who hasn't gone through the first year of medical school.
For example: