Just why do you get dark rings around your eyes?
WE'VE been there before - walking into work in the morning, only for a colleague to mutter something about the dark rings underneath your eyes.
And if you've heard the words "somebody was up late last night!" before, the chances are you can empathise with the struggle.
Getting enough shut-eye is crucial to productivity, of course, and experts recommend anywhere between six and 10 hours of sleep per night.
Without enough sleep, we just can't function properly - no matter how much coffee we drink or energy bars we eat.
Getting enough shut-eye is crucial to productivity, of course,... read more
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