> 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/data-api-sdk/data-model-fields-and-units/active-durations-and-intensity-buckets.md).

# What's in active durations and intensity buckets?

In Daily payloads, `active_durations_data` aggregates the whole day's activity:

* Manually initiated workouts
* Automatically detected activities
* General device-tracked movement

Intensity buckets (rest, low, moderate, vigorous) are classified by each **provider's own algorithms and thresholds**, so they vary across wearables. No field is guaranteed present; availability depends on what the provider supplies.


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