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BMR (Basal Metabolic Rate) is the amount of your daily energy expenditure if you rest all day. If you are active you increase the amount of your caloric needs by 20-80 %. The total amount of calories you use every day is called Metabolism or Metabolic Rate.

BMI (Body Mass Index) is defined as the individual's body weight divided by the square of his or her height. It is used to assess how much an individual's body weight departs from what is normal or desirable for a person of his or her height.