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# HKCategoryValueSleepAnalysis.asleepCore

The user is in light or intermediate sleep.

```
case asleepCore
```

## Discussion

This value corresponds to stage N2 of the American Academy of Sleep Medicine’s scoring model. Stage N2 is also referred to as light or intermediate sleep. It accounts for a major part of the time spent asleep. The [`HKCategoryValueSleepAnalysis.asleepCore`](/documentation/HealthKit/HKCategoryValueSleepAnalysis/asleepCore) value also includes stage N1, which makes up only a small portion of the night.

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