An individual’s BMR is the daily minimum level of energy or calories the body requires when at rest (including sleeping) in order to function effectively.
BMR measurements can be used as a minimum baseline for developing a personalized nutrition program that can include additional calories depending on a client’s activity level. A person with a high BMR burns more calories at rest than a person with a low BMR.
A basic BMR calculation uses a standard equation using weight and age. TANITA has conducted in-depth research into the relationship of BMR and body composition which gives an accurate and personalized reading for the user based on their impedance measurement.
Here you can find more information about the BMR.