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Why is my total calorie amount (per day) changing everyday?

I have been using myfitnesspal linked to the fitbit app and have been tracking all my foods consumed in MFP. My calorie budget "goal" in MFP has remained the same and then earned more calories & calories remaining for the day is altered as I workout or do some sort of activity. Now when looking at the FITBIT app, since MFP is linked to it, my calories consumed will show and might be off by a little), today I noticed the allotted calorie amount for the DAY is completely different than it was yesterday. for example, yesterday I was allotted 1470cals but as I did some activity that amount changed and end of day result was 1839 cals IN, 2824 cals OUT, and I was under target and had 485cals remaining. (if it helps, I have opted for 1lb weightloss per week putting me at 500cal deficit).

Now TODAY, after waking up I see that my allotted calories for the day is 1070. Why has it changed? and why is it so low? I thought fitbit takes tdee & bmr into consideration??

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1 REPLY 1

The Fitbit calories change based off of your activity and will increase as the day progresses. If you happen to be more active on one day then you will be allotted more calories for that day. If you check in the morning it will always be lower since you just started your day.

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