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(Photo by George Milton via Pexels)

By Stephen Beech

Why the brain feels "foggy" after a poor night's sleep has finally been explained.

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(Photo by Ketut Subiyanto via Pexels)

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(Photo by cottonbro studio via Pexels)

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(Photo by cottonbro studio via Pexels)

Originally published on talker.news, part of the BLOX Digital Content Exchange.