Cardio Fitness not working on my Apple Watch Series 6 (or on my previous Series 5)

It’s really INCREDIBLE how many people with this issue …. APPLE should be ASHAMED …. I already said it … the most expensive smart watch on the market … and they DON’T fix this issue since weeks …. Monthes now 😤😤😤😤😤😤😤😤😤😤

Update: I’ve just been out and walked the dog and my Apple Watch 6 has magically appeared in the ‘Data Sources’ and updated my VO2 Max. This is the first time since 11th Feb despite frequent doggy walking everyday. Maybe the 2 brisk walks yesterday had an impact.

I have similar issue, although watch (s6) has always shown up as data source. Only owned watch 4 weeks. My 1st. From late January it logged all walks/runs with vo2 showing. Then sporadically missed a couple around 11/12 feb. Now nothing since 14th despite daily workouts. Tried all sorts of fiddling but no joy. Will raise a ticket

My Apple Watch 6 mysteriously appeared as a data source after having a couple of fairly leisurely walks. While this is welcome other cardio such as indoor cycling has no effect. Not really what I would call a “fitness” watch.

It needs an update very soon.

I agree with all these posts I am extremely disappointed I bought an Apple Watch 6 for the first time in my life super excited for the cardio fitness feature especially in mind of going through the pandemic and this watch helping me to stay healthy and aware of my health status I tried calling Apple support I was shifted through many people I finally got a woman who insisted that the only way they could find out what was wrong was to download information to my phone which I did not want to do so since then even though I have sent her more information I’ve had no response from Apple. She tried to make me feel humiliated like I was so stupid and they were so smart I sent several screenshots of my workouts and yet their advertisement says that this cardio fitness will monitor your VO max even if you were just walking throughout the day your daily activities not needing to have a special workout . I feel this is faults advertising!!!😡😡 this is not worked from day one!!!😡 I’ve read through this whole thread and I’ve tried all the things suggested and nothing works so essentially this watch is a very expensive watch that doesn’t do anything that it’s supposed to do I’m going to see about sending it back or getting a new one.

I think you could be right to a point, I think I had my phone with me in January and all was good and I was using my Nike app. Yesterday I had my phone with me and used the Nike app on a 5 mile walk and it didn’t work. Tomorrow I’m going to use the Apple fitness app and bring my phone and I’ll see what happens but I have my doubts. At the end of the day it’s the watch that calculates your cardio fitness and I think Apple has ****** it up. I don’t know if I have a right to return the watch if this is not working but it’s the reason I bought it. Under EU law I may have a case as the watch as advertised isn’t working properly.

Perhaps it’s worth mentioning that although I now get updates (for walking) under “Cardio Fitness” I have “No Data” under the heading “Cardio Fitness Notifications”. There is nothing under “Data Sources”. Not sure what sort of notifications I’m suppose to get.

Series 4 with 12 mini. What good is the watch if it DOES NOT record Cardio Fitness / VO2 Max on any indoor exercise like stationary bike, stair stepper, high Intensity interval training, rowing machine, Treadmill, etc. These are all very good cardio health exercise regiments but the Apple does not record them in the Cardio Fitness / VO2 Max. All of these exercises are already programmed into the watch.

The Apple Watch, I am told by Apple support only records Cardio Fitness / VO2 Max when you are walking or running outdoors.

I am not sure this watch is for fitness tracking. I may need to look at alternatives.

About 1/2 days after I posted that my cardio fitness was not registering and the troubles that I’ve had, my watch completely turned black. The screen was black I could not reset it. it appeared that the watch was still onstill getting notifications, but I could not see anything so I called Apple support and I ended up having to send my watch to Apple Support for a repair. I hope they can figure out what is wrong with my screen and my cardio fitness. Honestly the only reason that I got this watch what is for the fitness and health aspect. 🥵

Can we try and keep the thread on focus and just post if you have information that helps solves the issue.

Posting complaints is not helping and just spamming everyone who is subscribed to this thread.

Additionally if you are upset at the watch - buy another one. But Apple clearly explain how Vo2 measurements work - and that it requires outdoor activities (because it measures pace). Its mentioned numerous times in their marketing/reviews/and on the phone itself.

Note - no health tracker on the market can accurately estimate Vo2 from indoors or on static devices - this is because the measurement is estimated via heart race and your pace to estimate oxygen intake.

How am I spaming. The watch they advertise is clearly not working and I’ve been putting up what Apple told me which is nonsense. If you think it’s ok that they tell you that you can’t run on a hill because the watch is not giving accurate info then I cant help you. I also know it’s only calibrated for out doors. The more people complain about it the better and then we wouldn’t need these forums. This Is my first time on any Apple forum and I’ve Apple products all my life.

I’m only replying to people because I get an email off somebody from the forum like yourself. Apple did not say it was a bug. They don’t know what it is. My watched worked perfectly like I said in early posts in January and nothing since the other day and they don’t know why it’s working now and to the further emails off them they are saying there is gaps in the heart monitor about running on hills. I didn’t run in any hills last week when the info was sent back to Apple. I think you might want to go away now and get a life and go and try annoy somebody else. Any further info I get I’ll gladly pass it on to anyone that emails me.

Hi, i'm having exact same problem, cardio fitness Vo2 max started dropping around middle of October went from 40 to 30 and in January dropped to 20 and in February stopped registering, i've done updates and rebooted but still not working, any advice would be appreciated, thanks carol

I’ve lost all trust in the watch. I still don’t know if it’s working properly because Apple Told me about issues with it and wanted to repeat the same logs and tests as the first time but they haven’t come back. Just back from a run and it’s still working but I don’t know ifs it’s right. Nobody should be going to any levels of switching this , switching that for it to work properly. Think I was more happy when running just with the phone. I’m a big fan of Apple, 3 iPhones ,Mac book air, Apple TV box in the house but it’s the watch that annoys me the most. This had to have shown up in testing.

Hi! Did you get your issue resolved? I am having the same exact issue and did everything that I’ve found that ppl have suggested and nothing worked.. last recorded workout was 03/11/21 and nothing else after that! Frustrating.. but at least I’m getting in better shape doing workouts to see if they show up haha!