I manually set my HR zones in my watch's user settings section to 50-60-70-80-90-100 and Max HR as 180, but the Garmin Connect web page has them as 66-73-80-86-94-100 and Max HR as 185.
I certainly did not create the second set and the Customize Zones switch is greyed out. Why the weird spacing?
Does Garmin use my runs and performance to create a better set?
Should I use Garmin's weird ones?