Sleep glossary
sleep latency
Updated
It is the gap between lights-out and actually falling asleep.
Plain-English definition
Sleep latency is the amount of time it takes to fall asleep after trying to sleep.
It is the gap between lights-out and actually falling asleep.
Why it matters
Trackers may estimate it, but consumer data should be treated as a trend rather than a diagnosis.
Buying relevance
Use this term as a practical buying clue, then check the current manufacturer wording, setup guidance, materials, and returns policy. It should not be treated as a medical claim or a guarantee of how a product will work for you.