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Underestimating calories by quite a bit

Hi everyone,

First off, I've seen a couple people with a similar issue but they had no answers on their posts. Secondly, I am fully aware that calorie burn is an estimation and I don't expect an extreme precision. That said, I moved from a Vivoactive 3 to a Venu 2 last week, and I noticed a HUGE drop in my calorie burn. For similarly active days, in the range of 300-500 calories less! Obviously, all my data stayed the same since I'm using the same account and whatnot. 

During certain activities, say runs or treadmill jogs, the count is lower but not by too much. During normal day to day stuff though I was floored by how little calories this watch estimates. I went back and in very similar days (level of stress, activity, steps etc) my Vivo would give me around 500 active calories, whereas the Venu gave me a measly 150! 

I also noticed other strangeness, such as the calories dance telling me I need to do a 15 minute activity to make it accurate, except I did that a few times and it still says that. Also, I went for a walk today, nothing fancy just walking the dog around the neighbourhood. The activity itself scored 154 calories, which is actually just a hair higher than I saw with the Vivo. But what broke my mind - and maybe I'm missing something - is that my one activity gave me 154 active calories, yet my entire day only gave me 110 or so!? I mean, shouldn't my active calories be AT LEAST the same as what I did while being active?? And I'm not even talking of the wonky MFP integration...

I really like the watch but this is beyond strange. I follow a strict-ish CICO regiment and this has thrown me off some fierce! At first I figured the Venu 2 was more accurate, and I was just overeating all the time (I was constantly hitting under budget) but I'm hungry. A lot. There is no way I'm not burning more calories than this is telling me...

I'm a bit concerned this (quite expensive) watch might not accurate, and that would really such because I kind of like it! Any help welcome.

Thanks

  • Heart rate and resting heart rate has a big impact on Garmin's estimation, so that needs to be accurate. This is the main reason I wear my watch as often as I can, including sleep. In my case, active calories seem accurate.

  • Thank you! I will go back to fitbit then, since I don't want to have the watch in recording mode the whole day.....what's the point?

  • No, it's not the greatest, I tend to just ignore the calories now, as you say barely moves even when being active. Especially with the Venu being more of a lifestyle watch. Found it hard to believe Fitbit would be a thousand calories out.