#10 OF THOSE WEIRD THINGS HUMANS DO AND WHY WE DO THEM

10. SHAVING
Whether you're a woman battling armpit or pubic hair, or a man keeping a beard at bay, shaving is the norm for modern humans so much so that not shaving certain body regions strikes many people as unattractive. But strangely, this culturally-determined behavior defies our own evolution.

After all, armpit and pubic hair evolved to help trap pheromones. Considering that we exude those odorous chemicals for the sole purpose of attracting mates, it's odd that we now perceive their smell as pungent, and the hair that traps them, shave-worthy. Furthermore, beards evolved to help women distinguish men from boys; they indicate a man's maturity, and exaggerates his masculine jaw line. Nonetheless, today, most men opt for a clean-shaven look.