Measuring calories burned is a fairly inexact science at the best of times, and there is some inherent inaccuracy in any calorie estimate.
If you are within 100 calories (either way) of your weekly target, I'd say you had pretty much hit your target.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
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