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# workoutSession(_:didBeginActivityWith:date:)

Tells the delegate that a new workout session began.

```
optional func workoutSession(_ workoutSession: HKWorkoutSession, didBeginActivityWith workoutConfiguration: HKWorkoutConfiguration, date: Date)
```

## Parameters

`workoutSession`

The workout session that receives the new activity.

`workoutConfiguration`

The workout configuration object for the new activity.

`date`

The activity’s start date and time.

---

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