Using Resting Heart Rate For Early Warning of Coronavirus Infection

Which thermometer do you use?

I reached the same conclusion regarding HRV & breathing, though some people think paced breathing is a mistake

My understanding is that Apple Health isn’t set up to be able to look at their users data, even if they got permission to do so. The Kinsa Health map is nice, and I’d be happy to contribute data if I had one of their devices, but do they let you opt out?