Apple Watch Series 12’s new heart rate sensor tracked almost exactly with a Polar H10 chest strap in the first round of testing by Rob ter Horst, who runs The Quantified Scientist YouTube channel. In his own testing, the watch scored correlations of a rounded 1.0 for indoor cycling, 0.98 for running and 0.97 for…
Heart Rate
How to Read Recovery HRV and the Daytime Vitals View on Apple Watch Series 12
Apple Watch Series 12 measures heart rate variability every five minutes and reports it two ways: Recovery HRV, which Apple describes as a daily stress and recovery signal, and overall HRV. Both appear in the Heart Rate app on the watch, and a new daytime vitals view lets you toggle between overnight and daytime metrics…