Fitbit and calorie adjustments

bfonvill

I have a Fitbit. I take it off to do heavy work in the garden--don't want to get it coated in garden grunk. Today I spent three hours with the pickaxe, shovel, hoe, etc. digging out a new bed 8'x2'x12" deep. Then amended the soil, put it all back in, and planted and mulched. Three hours of heaving, hauling, shoveling, swinging the pick, etc. I logged the three hours into MFP by hand, since I did not have the Fitbit on for all of that. MFP gave me -50 calories, and cut me back instead of giving me extra calories. What did I do wrong?

Jean

A negative calorie adjustment indicates that you are using fewer calories on a given day than our original MyFitnessPal estimate.

You can read more about negative calorie adjustments here: https://support.myfitnesspal.com/hc/en-us/articles/360032272152-Should-I-turn-on-Negative-Calorie-Adjustments-

Lietchi

Taking off your Fitbit means Fitbit thought you burned fewer calories (gardening not counted)
-> this lower calorie burn is sent to MFP, which will in turn give you a negative calorie adjustment.

I've never used a Fitbit, so I don't know if this is possible: it perhaps would have been better to add your exercise manually to Fitbit directly?