Why are the sleep stages important?

Modified on Thu, 25 Nov 2021 at 09:31 AM

The duration and distribution of each sleep stage may reveal important information about a person’s mental and physical well-being. For example, individuals with depression characteristically demonstrate reduced deep sleep and increased REM sleep. Deep and REM sleep are particularly important in consolidating memories and play a role in cognitive performance. Research suggests that deep sleep is also involved in repairing damaged tissues and restoring energy sources.

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