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# basalEnergyBurned

A quantity sample type that measures the resting energy burned by the user.

```
static let basalEnergyBurned: HKQuantityTypeIdentifier
```

## Discussion

Resting energy is the energy that the user’s body burns to maintain its normal, resting state. The body uses this energy to perform basic functions like breathing, circulating blood, and managing the growth and maintenance of cells. These samples use energy units (described in [`HKUnit`](/documentation/HealthKit/HKUnit)) and measure cumulative values (described in [`HKQuantityAggregationStyle`](/documentation/HealthKit/HKQuantityAggregationStyle)). Sample data may be condensed and/or coalesced by HealthKit. For more information, see <doc://com.apple.healthkit/documentation/HealthKit/accessing-condensed-workout-samples>.

## See Also

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

The identifiers that create quantity type objects.

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

A sample that represents a quantity, including the value and the units.

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

An object that stores a value for a given unit.


---

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