# Sleep()

> Forces an articulation body to sleep.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine](/engine/6000.5/script-reference/unityengine.md)
* **Assembly:** UnityEngine.PhysicsModule

```csharp
public void Sleep()
```

### Remarks

A common use is to call this from Awake in order to make an articulation body sleep at startup. See the [Rigidbodies Overview](/engine/6000.5/manual/physics-section/physics-overview/rigidbody/rigidbodies-overview.md) in the manual for more information about Rigidbody/ArticulationBody sleeping.