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Heart? cardio vs fat burn on my Versa

I exercise by "spinning". I note that below the heart avg bpm is a bar with 66% cardio on one day. Another day may have 75% fat burn. Does anyone know the criteria that decides these estimates? Also the relationship of the criteria.

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See What are heart-rate zones?

Those are the amount of time in that heart rate zone.

The heart rate zones are out of zone, fat burn zone, cardio zone, and peak zone, with increasing intensities.

See the above link for explanation of each zone.

Before posting, re-read to see if it would make sense to someone else not looking at your Fitbit or phone.

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It’s not an estimate. It’s just the breakdown of time spent in each HR zone, based on the HR detected by your Fitbit while you performed the exercise. If you perform the same exercise at the same intensity, you should have relatively similar results.

Dominique | Finland

Ionic, Aria, Flyer, TrendWeight | Windows 7, OS X 10.13.5 | Motorola Moto G6 (Android 9), iPad Air (iOS 12.4.4)

Take a look at the Fitbit help site for further assistance and information.

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Thanx Dominique, I will pay some attention to the varied shades in the
colour bar.
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I would love it if you all added me as a friend...and if any of you have any questions please ask me anything...I am happy to share my experiences with all of you.

 

Happy FitBiting!!!

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