Counter calorie expenditure

During the muscles must burn calories to feed their contractions. The conversion of calories from normal (nutrients) to the form that can be burned by muscle cells during aerobic exercise are achieved by the process of cellular respiration, which requires the delivery of oxygen through the bloodstream to the muscle and is directly related to heart rate. It is this relationship that predicts energy expenditure (ie, the amount of calories burned). In essence, with the intensity of exercise your muscles must burn more calories, so your heart must beat faster to provide the oxygen needed to convert calories into energy that can be burned by the muscles.

If you have a device to control your heart rate with your application then you will know how many calories you've consumed.

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