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Aerobic & Anaerobic effect

Former Member
Former Member

Hi there ,

I hate loving my watch even if it started with some widgets missing , and after that some performance condition & vo2 not updating , hopefully these are over now and my new issue is :
Last two-three runs (6-9km each) mostly at lvl 4 heart zone and threshold run at the end I have an aerobic effect from 3.00-4.4 which is as it should and anaerobic stays at 0.00 lol not even a single point up, heart rate always at threshold and some minutes even at lvl 5 red zone but still 0,00 anaerobic.
Is this normal ? At same runs I remember my 245 used to see numbers from 1,00 to even 2 so getting 0 seems strange.