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My heart rate zones changed over the last couple days.

Former Member over 5 years ago

I'm 48 and weigh about 180. Zone 5 has been 157 BPM to max for as long as I can remember. Now zone 5 is 166 BPM to max. The rest of the zones have bumped up as well. I didn't change anything myself. I don't even know how to do that. What happened?????

0 tmk2 over 5 years ago

Either your max max HR changed or your LTHR changed. By default HR zones are set as a % of either max HR or LTHR (don't remember which one). In the menu on the watch go into "My Stats" / "User Profile" / "Heart Rate". Then look at "Zones" or "Sport Heart Rate" / "Running" / "Zones".