It scratches off tiny T-shirt fibers and directs them towards the belly button. So that might be one mystery solved, but lint isn't the only thing inside these bizarre human crevices. Your belly ...
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Belly Button (Navel) Anatomy: Function, Conditions, and CareMedically reviewed by Alicen Nelson MD, MPH The navel, also known as the belly button or umbilicus, is a small, round, or ...
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