Understanding MFP with Fitbit

Luseil

Hi guys,

I recently got a Fitbit Alta HR and synced it to MFP. Previously I was eating 1300 with the expectation of burning about 1600 throughout the day based on my estimated activity levels. I'm 5'3" ~120 lbs and working on losing about 5 more pounds.

I'm not really understanding the Fitbit Calorie adjustment, does it mean I should/can be eating more or does fitbit over estimate?

Fitbit Calories Burned
Full Day Projection
(Based on 2065 calories burned as of 10:57 pm)

2133

MyFitnessPal Calories Burned
1579

Fitbit Calorie Adjustment
554

CyberTone

Yes, eat back at least a percentage; start with about 50% and after a few weeks adjust based on your results.

I always eat back 100% of my earned Calories in maintenance. I ate back 90% of them when I was losing a few pounds and had no problem netting about 1600 Cals per day to lose those pounds when I had MFP set to lose 0.5 pounds per week. For comparison, I am 55, 5'8", 150 lbs. and my maintenance net Calories are about 1820 at MFP Sedentary. I normally gross 2300 Calories logged for food and earn on average about a 500 Fitbit Calorie adjustment above MFP Sedentary activity level setting.

I do use a food scale to weigh all solids, measuring cups and spoons to measure liquids, and verify all food items I log through outside web sources and Nutrition Facts labels. I trust that my Calorie Intake is pretty accurate using MFP, and I trust my Calorie Output is pretty accurate using the Fitbit Charge 2.

I would recommend reading through the first three posts in this thread on the MFP Fitbit Users group...

http://community.myfitnesspal.com/en/discussion/10098937/faq-syncing-logging-food-exercise-calorie-adjustments-activity-levels-accuracy

http://community.myfitnesspal.com/en/group/1290-fitbit-users