For instance, the tiny device on your wrist only has your basic data and not full details like muscle mass and fat mass. However, the above math omits a few important factors like muscle mass, hormonal imbalance, rate of metabolism, etc. Hence, it’s always good to remember that the calorie expenditure is always an estimate and never on point. If you recall, the fitness tracker or smartwatch monitors your heart rate continuously when you start a workout. It will then use this and do the math keeping your elevated heart rate into account, especially during exercises and workouts. This sensor tracks your activities, steps, and pace throughout the day. The Basal Metabolic Rate is the rate at which your body burns energy to keep itself going, like breathing, keeping warm, thinking, and keeping the vital organs going.Īpart from that, these devices also come with 3-axis accelerometers and gyroscopes. If you remember, you have to enter this information when you register for an account. The device then uses the heart rate and other factors like age, height, and gender to calculate the basal metabolic rate. However, good fitness trackers use complex algorithms and calculations to find the number of calories lost while you are walking, standing, going through your daily life, or working out. One of the basic factors responsible for calorie tracking by fitness trackers is the heart rate. Well, that’s what we will find out in this post today as we explore the workings of a smartwatch or a fitness band and see how the numbers come into being.
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