All of my stuff updated to the 27 versions today. During indoor cycling class, I kept getting health alerts on my watch about high heart rate while stationary. Despite currently having the very same apple watch tracking my indoor cycling workout.

I guess Claude doesn’t take spinning classes

heart recovery is one of several headline new features they mention on first run (and in app ref info) will calibrate over time

as often the case when Apple makes its move, their implementations -- while late compared to e.g. Garmin which has had them for years -- purport to be leading accuracy on these features among wearables