But there is one valuable lesson I learned already with my previous Versa 2 and confirmed later with my current Sense: for people with heart issues, if you take seriouly the Heart values provided by these Fitbit devices, they can be harmful to your health, at least your mental health. I had such scares in the beginning with the Versa 2 heart rate values... And Sense is not much different on that, I just learned not to take them too seriously when they go out of the expected and try to confirm them with another device, when that is possible.
Fitbit is very right when they say their devices are not intended for medical purposes.
