Insufficient sleep impairs the brain's ability to distinguish between important and unimportant stimuli, causing everything to feel more overwhelming than it actually is; this occurs because REM sleep is essential for resetting emotional sensitivity, so feeling overwhelmed may simply be a result of catching up on sleep from the previous night.
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What Bad Sleep Actually Does to Your MoodAdded:
Bad sleep just doesn't make you feel tired. Currently, it also makes everything feel worse than it actually is. I came across a study recently that found that without enough sleep, your brain lacks the ability to tell the difference between what matters and what doesn't. Because of that, everything starts feeling kind of heavy. It actually comes down to your REM sleep because that's when your brain resets its emotional sensitivity. So, the next time everything feels overwhelming, remember it might just be last night catching up with you.
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