alt Hacker NewsThe 4th generation heart rate sensor is quite interesting -- Apple Watch used to sample every ~5 minutes, and now it's every 5 seconds (basically continuous). I think that'll enable a lot of interesting health & wellness use cases.
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danek_szy • today at 7:07 PM
Too bad Apple reserved the [training] Readiness feature only for the Ultra 4 - I'm pretty sure Ultra 3 and probably below are just as well equipped to provide such insight...
It's interesting because during workouts, the heart rate sensor samples every 5 seconds but besides that, it was either every 2 or 5 minutes. I'm guessing the battery drain is too much to have it sample every 5 seconds all the time!