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Can Sleep Trackers Tell Which Stage You Are in?

at 11:00

From the episode: AMA with sleep expert Matthew Walker

The devices are good at estimating duration of sleep, but not the stage of sleep. They are good at detecting the two class algorithm-- total sleep time, awake or asleep. They fail at detecting the four class model-- whether someone is awake, in light or deep non-REM sleep, or in REM sleep.

The Peter Attia Drive · AMA with sleep expert Matthew Walker · at 11:00 · ·Transcript

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