Humans have one of the highest percentages of body fat on the planet. Your centere of gravity is around your waist, and so it's a sort of convenient place to store fat. Females with a corvy figure are better able to compete, to attract high quality mates. Men should have a psychological adaptation to prefer these women as meeting partners.
Once upon a time, there were no anuses. These ingenious organs allowed our primordial ancestors to grow bigger and more complex, but scientists still don’t understand how they evolved. And they’re still grasping at a mystery that literally surrounds it: Why is the human butt so big?
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