How is Sleep Efficiency in my Sleep Tracker Calculated?

Modified on Thu, 22 Sep 2022 at 07:36 AM

Sleep Efficiency is calculated by dividing Total Sleep Time by Total Time in bed. "Normal" is considered to be 80% or greater. For example, if a person spends 8 hours in bed (from 10 p.m. to 6 a.m), at least 6.4 hours or more should be spent sleeping to achieve an 80% or greater sleep efficiency.  Most healthy and young adults have sleep efficiencies above 90%.

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