My new Apple Watch does not show the set-up prompt when I select cardio fitness in the health app. VO2 max is not measured and “no data” is displayed when I tap on cardio fitness. What is wrong with my watch. I run and walk outside every day.

Thanks, already have. Thus far, they’re useless, no viable solution provided.

Resetting the watch to the factory defaults did not work. VO2 max continues not to be measured and “no data” continues to be displayed when I tap on cardio fitness. I run and walk outside every day for more than 20 minutes at a time. Does anyone know how to resolve this issue?

Hmmm, I purchased two Series 6 watches new ~ 30 days ago. Setup was the same for both, one watch (my wife’s) displays cardio fitness now, the other watch (mine) is not showing cardio fitness data. We run and walk together on a daily basis. I don’t think the 100 day suggestion is correct. Where did you get that info?