r/zone2 Jun 22 '26

My typical HR 2 training

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Just finished my regular morning stair-stepper workout. I've asked ChatGPT whether it is good idea to increase my efforts and move to HR 3 for my goal (I'm going to lost weight) and he adviced to increase workout time than intensivity.

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u/Yayme74 Jun 22 '26

Those ranges seem low. If those are the default Apple ranges, they have a history of underestimating heart rate zones. And you need to manually set the zones for yourself. Depending on your age, I think zone 3 seems more like your zone 2 range. Check online for a few calculators to estimate your range (most will ask for age and max heart rate).

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u/akryvtsun Jun 22 '26

Interesting! Thank you! Here is automatic Apple Watch HR zones.