Biologically, why do we have facial hair?
Because
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Because.
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Facial hair is simply another of what biologists and anthropologists call our vestigial traits. That means the physiological remnants we still have from our evolution in the primate and bipedal hominid genus. Other vestigial traits are body hair...tail bones...fight or flight responses...and finger and toe nails. And if you look at a lic of our brain you can see how it evolved too. You can zee how it began with the basic reptilian brain and then spiraled into a larger brain with a frontal lobe. We homo sapiens broke off from the great ape lineage about 6 mya. This is not all that long in geological or anthropology time... Since their has been life on this planet for over three billion years...which is three thousand million Years! Side: Because
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