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Scientists have a firm grasp on the purpose of certain automatic physical functions, like blinking, breathing, or digestion. When it comes to sleep, however, researchers still aren’t clear on why exactly your body needs to shut off every night. Details aside, one thing’s for sure: When you don’t sleep, your body revolts.
The effects of acute sleep deprivation—which is more akin to pulling an all-nighter than to getting just a few hours of sleep every night for weeks at a time (that’s chronic sleep deprivation)—generally kick in after 16 to 18 hours of being awake and get progressively worse with each proceeding hour. Your mind, heart, endocrine system, and immune system are all affected, malfunctioning in ways both subtle and severe.
The consequences of chronic sleep deprivation are far worse than one sleepless night. But the decision to pull an all-nighter just once can leave some serious damage in its wake.
Mind
When it comes to the effects of acute sleep deprivation, “It’s really all about the brain,” says Steven Feinsilver, director of sleep medicine at Lenox Hill Hospital and a leading sleep researcher. The first signal that your body is overtired will be a sluggish mind. Your reaction time will begin lagging around hour 18; after a full night without sleep, it will nearly triple—which, for context, is about the same as being legally drunk. Your ability to form memories will start deteriorating, and after a while, your capacity to create any new memories at all will shut off entirely.
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Photo: Bill Butcher
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James' World 2 
Apr 05, 2023 @ 00:49:38
I suffered from sleep deprivation years ago but I soon realized the importance of adequate sleep 😴 💤
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Apr 05, 2023 @ 08:08:22
The world looks brighter and you are healthier after proper rest. Was god resting an example for us?
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