# sleeping

> The sleep state of the particle system.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.VFX](/engine/6000.7/script-reference/unityengine/vfx.md)
* **Assembly:** UnityEngine.VFXModule

```csharp
public bool sleeping
```

### Remarks

Unity skips render and dispatch commands while a particle system sleeps. The particle system wakes up if a spawn context triggers new hits.