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What exactly is a good night's sleep?

This is different for each individual and is partially a perception. We know that most people need between 6-9 hours of sleep.  We also know that they should get about 20% deep sleep and 25% REM sleep. A strict definition of a good night’s sleep might include these variables.
However, there are many people who get far less than these “required” amounts of quantity and quality but wake feeling refreshed and ready to meet the day.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.