Once again, issue with my Garmin 965 with rising heart rate on an easy run. I am sorry but when you spend as much money as we do on a watch like this, there needs to be accuracy. Especially since it throws off all the other data and tells you that you are overtraining and should rest. I love the graphics of this watch especially the AMOLED screen, but it is useless to me now and will go back to my Coros watch which I never have a problem with. Sadly, disappointed once again in Garmin as I had a 955 a year ago with similar issues. Would have thought by now it would have been fixed.