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watch is not collecting cardio fitness data

my watch is not updating/collecting cardio fitness data(VO2 max) and can seem to find a way to re-activated

Apple Watch

Posted on Apr 21, 2021 4:43 AM

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3 replies

Apr 21, 2021 5:25 AM in response to mjrugrats

Remember not all exercises count VO2Max


Make sure the your personal information is up to date in the health App.

Height, weight, age, sex


Then reset your fitness calibration data


From your iPhone>Watch>Privacy>Reset Fitness Calibration Data>Tap this

You will just get a confirmation box that tells you that your metrics will not be as good if you do this.

Tap confirm and do it. You will get nothing else, no confirmation but it is done.


Then go for a 20 minute outdoor run or walk using the workout app at your normal speed on a flat road/path etc

This will re-calibrate the watch.


Not this time but the next exercise that calculates VO2Max it should work.

watch is not collecting cardio fitness data

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