Sleep
Sleep Efficiency Target
The share of time in bed spent asleep—low efficiency signals too much wake time or mismatched bed window versus sleep need.
Sleep efficiency target is the ratio of time asleep divided by time in bed—often aiming for eighty-five percent or higher in healthy sleepers. Low efficiency means too much wake after lights out or an early clock time relative to sleep need.
Improving efficiency may require restriction before extension.
Common questions
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What is a good sleep efficiency percentage?
Roughly eighty-five percent or higher is a common clinical target for adults without major disorders. Below that for weeks warrants habit review or professional assessment.
Related terms
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