> For the complete documentation index, see [llms.txt](https://docs.tryterra.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tryterra.co/faq/help-topics/no-data/missing-fields-data-types-in-payloads/sleep-is-separate-data-type.md).

# Why is sleep null in my Fitbit daily payload?

Sleep is delivered as a dedicated `sleep` data type, **not inside the daily payload**.

* The daily payload carries metrics like steps, calories and active minutes.
* Sleep sessions (duration, stages, HR, HRV) arrive in their own payloads.

To receive it, **enable `sleep` under your** [**Destination data type settings**](https://docs.tryterra.co/health-and-fitness-api/integration-setup/customising-data-types) and look for separate sleep payloads in your [webhook logs](https://docs.tryterra.co/health-and-fitness-api/integration-setup/setting-up-data-destinations/webhooks).