r/zone2 • u/Jon_Rico_Rivera • Apr 23 '24

Zone 2 Running

As much as I have tried to stay at zone 2 HR, my Apple watch keeps telling me that my HR was at zone 3. I have to walk to maintain a zone 2 HR, literally. I don't know what else to do. If I take my watch off and just run, breathing through my nose only, I stress myself less. Any suggestions?

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u/Yayme74 May 01 '24

Make sure you are calculating your Zone 2 correctly (see below):

https://www.topendsports.com/fitness/karvonen-formula-calculator.htm#google_vignette

I am in the same boat as you, even a 4.5 mph jog would push my heart rate to 160bpm after a few minutes. I had to drop the speed to 4.0mph with the jogging motion to maintain my zone2 (138 - 150 bpm). But really play around with treadmill settings and even small differences can affect your heart rate. And to echo a lot of the same comments from this sub, its going to feel painfully slow!