I'm not sure if there's a way to truly calculate all the calories a person burns as there's so many variables (maybe a thyroid test would give an estimate?), but even in theory, are the very lean "genetically gifted" guys who eat junk food all day owners of high metabolisms compared to those who gain weight on 2500 calories a day?
edit: talking about basal metabolic rate not including calorie expenditure via exercise. i believe anybody can have a high metabolism. just a function of work
edit: talking about basal metabolic rate not including calorie expenditure via exercise. i believe anybody can have a high metabolism. just a function of work