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Fat Burn Zone Level Changed?

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‎03-21-2021 14:24

‎03-21-2021 14:24

All the sudden I couldn't reach fat burn zone that much today. Even if I worked harder than I usually do. Two things were strange today:

1. It was harder to raise the heart rate than usual

2. The fat burn zone started at like 121 bpm or something. Not at 118 bpm as it usually does.

 

Has there been an update or something last night? Or what could be the cause of this?

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‎03-21-2021 18:22

‎03-21-2021 18:22

Need to know which Fitbit model.

Does phone app show "Active Minutes" or "Zone Minutes:?

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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