Why do we need pillows?

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Did our ancestors always sleep with an arm under their head? Why do we need to elevate our heads to sleep?

Why does the pillow being soft matter?

In: Biology

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The human neck has evolved to be highly mobile, like other animals. To help us look around and see predators and prey. I’m imagining this was a larger factor in natural selection, being more aware than being able to sleep better. Someone else will probably word this much better than I did.

And now we demand comfort and luxury. A pillow is nicer than the hard ground? We can also sleep on our back just fine without a pillow. Its more side sleeping you need to support your heavy head at such a distance from the ground.

In Africa where we all come from it is still common enough in some counties to have wooden pillows . Check em out.