RE: Amazfit (Zepp) Smartwatch - Sleep tracking experiment
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hhahahah! that was my comment yes...
These data are only approximations obtained and related through your Heart frequency sensor but, as far as I know, these heart frequency sensors based on "light variation" are not accurate enough. Any movement can affect the acquisition of the data...A heart-frequency belt/band used to be more accurate on this measure.
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Right. Any idea why my readings with her watch look exactly like she's wearing the watch, and vice-versa?
It looks like, as revisesociology suggests, that they've basically taken an average over the past weeks/months and gone with that.
Yep, it makes sense