GOWEAR Fit Arm Band from Body Media

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HELLO, Just started wearing this arm band. Love it!!! Question, the calories suggested from this website and my Body Media website are REALLY OFF. MFP suggests 1300 for the 1 lb calorie loss. For my armband it says I need to consume 2,100 calories, which is A LOT for me. I don't eat really fatty foods (some deserts every now and then) but for the most part try to eat healthy splurges. ANYWAY, Just curious if anyone else had the same results?