😴 Sleep Stages (Simple)
Your watch estimates your sleep using movement + heart data:
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Light Sleep – body calming down
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Deep Sleep – physical repair
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REM Sleep – brain processing, dreams
⭐ Sleep Score
A 0–100 score based on:
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Hours slept
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Sleep cycles
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Consistency
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Restlessness
Higher scores = more refreshed days.
🧠 HRV at Night
Your HRV rises while you sleep.
A big drop may mean:
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Stress
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Illness
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Overtraining
Watch weekly trends, not single nights.
⚡ Readiness Scores
Combines:
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HRV
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Sleep
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Activity
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Recovery
Your watch tells you if today should be push, light, or rest.
🫁 Breathing & SpO₂
Overnight oxygen can show:
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Breathing patterns
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Air quality changes
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Altitude effects
📝 Pro Tips
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Same bedtime = better scores
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Avoid screens 1 hour before bed
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Keep your room cool
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Update your watch firmware