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What’s the point of All Day Mode for pulse ox?

Are the data being collected by the pulse ox sensor in All Day Mode being used for anything? My understanding of the altitude acclimatization function is that it’s calculated purely based on the altitude you are at (I live at high altitude and travel frequently to places of varying altitude, so the altitude acclimatization feature is of particular interest to me). Is it being used for anything else (for example, Body Battery or Training Status)? Especially curious given the battery life hit.

On a similar note, I believe Sleep Pulse Ox is used for the sleep tracking algorithm but I can’t find a definitive answer. Anyone know? Are the sleep pulse ox readings used for anything else?

Finally, is pulse ox tracked during activities regardless of whether the All Day Mode is on?

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