+Sleep is a natural, periodic state of [Rest](/wiki/rest) for the body and mind, crucial for physical repair and mental processing. It involves a temporary withdrawal from [Consciousness](/wiki/consciousness), where the brain actively cycles through different stages vital for overall well-being.
+## See also
+- [Dream](/wiki/dream)
+- [Insomnia](/wiki/insomnia)
+- [Circadian Rhythm](/wiki/circadian_rhythm)
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