Body Media - activity calories INCREASED?

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So I haven't been active at all today but when I log my body media with myfitnesspal, instead of having burnt calories, it's actually put that I've INCREASED?

Cardiovascular Minutes Calories Burned
BodyMedia calorie adjustment N/A -176
Add Exercise Quick Tools

Daily Total / Goal 1 / 30 -176 / 0
Weekly Total / Goal 2 / 90 -110 / 0

Anyone understand why this happens?