Posts in Sleep
Sleep stages

Sleep is not a single state and in reality we progress through five different stages. Each stage is characterised by a different brain and body activity state and each stage fulfills a different function.

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The three natural sleep processes

Sleep is regulated by three physiological / biological processes. One of which regulates "sleep pressure" (feeling we need to sleep), one regulates our "sleep window" (when we sleep) and the final one (down)regulates our "level of activation" (so we actually fall asleep and physiologically restore during sleep).

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