I wear a Fitbit that tracks my heart rate. I’ve been really stressed recently which is causing my heart rate to spike at times. When this happens, Fitbit tells me that I’m in the “exercise zone” and that I burned a ton of calories. I’m assuming this is because my heart rate falls into the exercise “fat burn” zone, but does my body actually burn any more fat than usual if I’m just sitting at my desk and anxious? Seems way too good to be true…
In: Biology
A little. Your heart is a muscle that physically requires energy to work so it does burn more when it’s beating faster. But it is nowhere near what you burn during exercise where you are working major muscle groups. so in this scenario, your Fitbit is not going to give an accurate picture of how many calories you’re burning. It assumes you’re working out your body based on what your heart rate is.
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