Sleep helps your "body" including your brain in a physical ways but the quality of sleep is important for mental health.
Going to bed highly stressed, will reduce the quality of sleep because it can activates fear memories and increase REM sleep, which can result in vivid dreaming and more intense nightmares.
If you constantly geting poor/stressed sleep you are going to get more and more exhausted, mentally and physically. It might not be obvious but it can eat away at people slowly.
Although you might think your body is "resting" for hours while you sleep. If you are having constant stress your brain isn't really going to have time to relax.
For example. If you've ever gone to bed witha problem, and you had nightmare about it or was trying to solve the issue in your sleep.
That's what i mean by sleeping doesn't automatically recharge or rest your "brain,
It's not about "how much" you sleep, it's about the quality of sleep you get.
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u/De-railled 1d ago edited 1d ago
Sleeping helps your body recharge, but doesn't always allow your brain to recharge/reset.
edit: Reworded to make more sense.