- Trends in resting heart rate and activity
- Sleep timing consistency
- Rough recovery signals (when used consistently)
- Over-interpreting sleep stage charts
- Comparing different devices as if they’re identical
- Changing the algorithm output instead of the underlying behavior
- Pick 1–2 primary metrics (e.g., sleep timing + resting HR trend).
- Use weekly averages.
- Treat the device as a feedback loop, not a judge.
See also: