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In my experience, the same dream is recycled with only minor variations.
I get stuck in a dream - a dream that repeats with minor variations - or, at least, a continuation of a theme without closure or any apparent tendency for closure.
A situation which is dull, annoying, futile; indeed it feels counter-productive, such that it feels like sleep is doing more harm than good.
That is the point where restorative sleep tips over into over-sleeping - when more sleep makes me more tired.
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