---
title: HKCategoryValueSleepAnalysis.asleepREM
framework: healthkit
role: symbol
role_heading: Case
path: healthkit/hkcategoryvaluesleepanalysis/asleeprem
---

# HKCategoryValueSleepAnalysis.asleepREM

The user is in REM sleep.

## Declaration

```swift
case asleepREM
```

## Discussion

Discussion This value corresponds to the rapid eye movement (REM) stage of the American Academy of Sleep Medicine’s scoring model.

## See Also

### Values for Tracking Sleep States

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