Why Arent Humans Naturally Nocturnal? | eJOY English
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Why Arent Humans Naturally Nocturnal?

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High Intermediate
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Science & Technology
If you follow me on Instagram, you probably know I went to the North Pole recently, andthis time of year the sun never sets. It was crazy. Why is it so hard to sleep when it's light out?Hey light sleepers, Trace here. This is DNews. Everything sleeps or has some kind of active
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