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# sexualActivity

A category sample type that records sexual activity.

```
static let sexualActivity: HKCategoryTypeIdentifier
```

## Discussion

Use a [`HKCategoryValue.notApplicable`](/documentation/HealthKit/HKCategoryValue/notApplicable) value with these samples. These samples can include [`HKMetadataKeySexualActivityProtectionUsed`](/documentation/HealthKit/HKMetadataKeySexualActivityProtectionUsed) metadata.

## Topics

### Metadata Keys

[`HKMetadataKeySexualActivityProtectionUsed`](/documentation/HealthKit/HKMetadataKeySexualActivityProtectionUsed)

A key that indicates whether protection was used during sexual activity. This metadata key can be used with [`sexualActivity`](/documentation/HealthKit/HKCategoryTypeIdentifier/sexualActivity) category samples.

## See Also

[`HKCategoryValue`](/documentation/HealthKit/HKCategoryValue)

Categories that are undefined.

[`HKCategoryTypeIdentifier`](/documentation/HealthKit/HKCategoryTypeIdentifier)

Identifiers for creating category types.

[`HKCategoryType`](/documentation/HealthKit/HKCategoryType)

A type that identifies samples that contain a value from a small set of possible values.

[`HKCategorySample`](/documentation/HealthKit/HKCategorySample)

A sample with values from a short list of possible values.


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