01-14-2026 02:49
01-14-2026 02:49
Cardio load is not registering after some workouts, not all, seems random. I have got the latest version of the app. Very disappointed as only just been gifted a Charge 6
01-14-2026 06:08
01-14-2026 06:08
I’ve got the same issue. Still searching for answers myself. Fitbit community no use so far. I have #6 fitbit
01-14-2026 13:44
01-14-2026 13:44
I’m having the same issue today. Two different workouts logged, both showing cardio load as 0 but my daily cardio load has updated (which is only from the exercises) must be some sort of bug/glitch?
01-15-2026 07:54
01-15-2026 07:54
I have exactly the same. Total updated but each exercise shows 0.
01-15-2026 09:07
01-15-2026 09:07
Im having the same problem. Went wrong at start of the week. I can do workouts in the gym which my Fitbit 6, recognises and give all other data except cardio load. Everything says 0. I have done all the recommended things to reset etc but makes no difference. As I use the target cardio load it's important to know the figure per exercise so as to ensure correct / approx load is achieved to meet daily target.
01-15-2026 09:09
01-15-2026 09:09
Having same problem but can't find a solution.
Best Answer01-15-2026 09:12
01-15-2026 09:12
Best Answer01-15-2026 09:47
01-15-2026 09:47
01-15-2026 10:59
01-15-2026 10:59
Best Answer01-15-2026 17:54 - edited 01-15-2026 17:56
01-15-2026 17:54 - edited 01-15-2026 17:56
I have the same problem so I track my own Cardio Load. I use the Bannister TRIMP formula (minutes x %hrr x 0.64 x e^(1.95 x %hrr). Use 1.67 for women. I do it in a Google Sheets spreadsheet using the EXP function to do the e exponent calculation. Once I set it up, all I need to enter is time and heart rate.
01-16-2026 01:13
01-16-2026 01:13
This problem shouldn't affect Target Load. AFAIK all your Cardio Load was captured and used in the Target Load calculation. The problem is that all the points were credited to General Activity and not your Logged Workout.
If you need to know the Cardio Load for your exercise, I put the formula in another post on this thread. I like to track mine and the formula tracks almost perfectly.
01-16-2026 06:07
01-16-2026 06:07
Mine seems to be working today
01-16-2026 14:09 - edited 01-16-2026 18:28
01-16-2026 14:09 - edited 01-16-2026 18:28
I updated to Android App version 4.6 and it worked right We'll see if it holds up.
01-16-2026 14:49
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01-16-2026 14:49
Mine stopped showing cardio load by the afternoon workout on Jan 13. Finally seems to be working today and it populated the missing days data.
02-02-2026 14:50
02-02-2026 14:50
Mine's doing the same. It won't register the exercise types I've tried. I think "workout" is registering though inconsistently. It seemed to work when I was doing an actual exercise routine, which involved movement, but it didn't when I used it to see if I could record a session on an exercise bike (it didn't). The last time I know "spinning" was successfully registered was Sunday, Jan 18th.
Best AnswerTuesday
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Tuesday
Hello @andrewgscott
Are you letting your Charge 6 automatically detect your workout or are you manually starting your workout on your Charge 6? If you are letting the device automatically detect your workout, that could be the problem. This help page (<-- click) has the list of activities that are automatically detected by your Charge 6.
Rieko | N California USA MBG PE
Best AnswerTuesday
Tuesday
Best Answeryesterday
yesterday
My Fitbit had an update I could apply plus the app updated a couple of days ago but still the same issue. "Workout" started and registered. "spinning" started but didn't register any cardio load despite similar pulse rates even if duration was only half of "workout". This is really annoying especially as it was all working recently. What could possibly have changed?
Best Answeryesterday
yesterday
Best Answeryesterday
yesterday
I had reason to reinstall the app yesterday due to Bluetooth syncing failure so I had to log back in then. But I've logged out and in just now but I'm not convinced it'll make a difference but trying it anyway.
Best Answer