Since the last update, the HRV value shows a high value (disproportionately) compared to before! Forerunner 255, what to do?
If you mean an update of the Garmin Connect app (you are posting to the forum dedicated to the app), then the app has no influence on the height of the HRV value. It is measured by the watch. If it is higher than before, then it means you are less stressed, more relaxed, better rested, hence it is a rather positive sign. There is nothing you need to do about it.
