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The context
Consumer sleep trackers can reveal patterns, but they do not diagnose sleep disorders and may estimate sleep stages differently from clinical testing.
Buying checklist
- Use week-to-week trends rather than one night’s score.
- Look for comfort, battery life and transparent data handling.
- Persistent snoring, breathing pauses or daytime sleepiness deserve clinical evaluation.
A tracker is most useful as a habit journal—not a medical verdict.
The practical takeaway
A tracker is most useful as a habit journal—not a medical verdict.
Primary source