“Does this actually track the different levels of sleep not just O2 levels?”
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Hi, Lyd. If you're referring to sleep stages, Fitbit Inspire 3 tracks sleep stages using a combination of your movement and heart-rate patterns. While you’re sleeping, your device tracks the beat-to-beat changes in your heart rate, known as heart rate variability (HRV), which fluctuate as you transition between light sleep, deep sleep, and REM sleep stages.
Sorry, there was a problem. Please try again later.No, just tracks hours of sleep. Gives average heart rate, average oxygen saturation.
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