What Sleep Stages Show
Sleep stages represent different phases of sleep that occur throughout the night.
- Light sleep
- Deep sleep
- REM sleep
Why Sleep Stages Matter
Deep sleep supports physical recovery while REM sleep supports cognitive recovery and memory consolidation.
Visualization

How to Read This Chart
This chart helps put Sleep Stages into context. Instead of looking at one isolated number, you can see whether a value is relatively low, typical or high.
Typical Values
| Category | Interpretation |
|---|---|
| Low | Below common range |
| Moderate | Around typical range |
| High | Above common range |
What This Chart Means in Practice
A chart becomes useful when you want to understand:
- whether your value is in a common range
- how values change with age or load
- whether your wearable data looks plausible
- which factors may move your value up or down
Key Factors Behind the Chart
When interpreting this chart, consider:
- age
- sex
- training status
- sleep and recovery
- stress and lifestyle
Practical Use
Do not use this chart only once. It is most useful for:
- weekly and monthly trends
- interpreting outliers
- comparing sleep, stress and recovery data
- making better training and recovery decisions
Useful Internal Links
Recommended SLEEP Trackers
Understand Your Health Data
LongLife Scan analyzes wearable health data and helps you understand patterns in stress, sleep and recovery.
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