The Sound of Music
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This calculator will assess your Basal Metabolic Rate, which is fancy talk for the number of calories you naturally burn. Or, another way to look at it, it is the number of calories you'd burn if you stayed in bed and slept all day. A person's BMR decreases as they age, meaning you need to be more active to burn the same amount of calories that you naturally burned at a younger age. The BMR calculator uses height, weight, age and gender to determine your resting calorie count.