I got my wife a new Watch 47c. Last night it recorded her sleep (on the sleep page), but there were no heart rate measurements. What triggers heart rate measurements, by default? Is there a way during sleeping or daytime to request regular heart rate measurements (e.g., every 5 or 15 minutes)? She’s also interested in gathering more data in general.
I didn’t see anything in the settings. It’s OK if it uses the battery.