---
title: HKCategoryValueSleepAnalysis.asleepCore
framework: healthkit
role: symbol
role_heading: Case
path: healthkit/hkcategoryvaluesleepanalysis/asleepcore
---

# HKCategoryValueSleepAnalysis.asleepCore

The user is in light or intermediate sleep.

## Declaration

```swift
case asleepCore
```

## Discussion

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 value also includes stage N1, which makes up only a small portion of the night.

## See Also

### Values for Tracking Sleep States

- [HKCategoryValueSleepAnalysis.awake](healthkit/hkcategoryvaluesleepanalysis/awake.md)
- [HKCategoryValueSleepAnalysis.asleepDeep](healthkit/hkcategoryvaluesleepanalysis/asleepdeep.md)
- [HKCategoryValueSleepAnalysis.asleepREM](healthkit/hkcategoryvaluesleepanalysis/asleeprem.md)
- [HKCategoryValueSleepAnalysis.asleepUnspecified](healthkit/hkcategoryvaluesleepanalysis/asleepunspecified.md)