Sleep Score
Sleep grades last night only — not a fixed eight-hour target. Your need comes from your own rolling average.
Sleep answers: how good was last night? It does not grade your week.
Components
| Component | Weight | Measures |
|---|---|---|
| Time asleep | 60% | Duration vs your sleep need |
| Deep & REM | 25% | Restorative architecture |
| Efficiency | 15% | Percent of time in bed actually spent asleep |
A seven-hour night can score well for someone whose baseline is 6.5 hours and poorly for someone who needs eight.
Bands
| Band | Range | Meaning |
|---|---|---|
| Great | 80+ | Excellent night |
| Good | 60–79 | Solid for most people |
| Fair | 40–59 | Below usual |
| Needs work | Below 40 | Prioritize recovery and bedtime |
Where it shows up
Sleep feeds Recovery at 25% on sleep quality. It has its own ring on Home, Watch, and widgets. AI Coach may mention a rough night in the daily brief.
No sleep data → the ring can be empty while Recovery uses other signals. Nap-only or partial nights use conservative scoring. Data comes from Apple Health sleep analysis and/or Oura when connected.
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Hammr Fitness is for wellness and fitness purposes only. It is not medical advice. Consult a physician before starting any exercise or nutrition program. If you have a medical emergency, call emergency services.