Why Do Humans Get Nervous When They're Tired?

Imagine your brain is like a superhero. When you're tired, it runs out of energy, so it starts sending out loud alarms, that’s why you feel nervous or anxious. It's like the superhero is shouting, 'I can't fight anymore!'

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Examples

A kid who stayed up too late starts jumping at every sound.
An adult who didn’t sleep well gets startled by the phone ringing.
You feel nervous before bed even though nothing is wrong.

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Categories: Health · neurology· sleep· stress· brain function· mental health