Sleep is a complex physiological process that is regulated globally, regionally, and locally by both cellular and molecular mechanisms.
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sleep
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Linked Claims
Sleep is regulated globally, regionally, and locally by cellular and molecular mechanisms.
Sleep occurs to some extent in all animals, although in lower animals its expression may be co-extensive with rest.
Sleep is essential for development, energy conservation, brain waste clearance, modulation of immune responses, cognition, performance, vigilance, disease, and psychological state.
There is no single physiological role that sleep serves.