Apple Watch sleep tracking is the reason I decided to hold onto my old Series 4 model when I bought a Series 5. It was worth so little that I figured I’d hang onto it and simply swap watches when I got into bed to use the S4 as a dedicated sleep tracker.
Monitoring my reported sleep patterns in the Health app, however, has revealed that the Apple Watch isn’t actually very good at the finer details – like telling when I’m in bed, when I’m asleep, and when I’m asleep in bed …
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