Basal metabolic rate (BMR) quite simply means the number of calories needed to maintain vital body functions.
BMR is the amount of energy expended while at rest in a neutrally temperate environment, in the post-absorptive state (meaning that the digestive system is inactive, which requires about twelve hours of fasting).
The release of energy in this state is sufficient only for the functioning of the vital organs, such as the heart, lungs, brain and the rest of the nervous system, liver, kidneys, reproductive organs, muscles and skin. BMR decreases with age and with the loss of lean body mass. Increasing muscle mass increases BMR.
Basal metabolism is estimated from the current body weight. To simplify things for users, the Asken Diet app will auto-calculate your BMR based on your current and target weight. Simply enter (or re-enter) those weights on the Goals screen and the app will generate your BMR. It is automatically calculated based on the formula below:
The Mifflin-St Jeor Equation: Recommended by American Dietetic Association
Men: RMR (kcal/day) = 9.99 × weight (kg) + 6.25 × height (cm) - 4.92 × age (y) + 5
Women: RMR (kcal/day) = 9.99 × weight (kg) + 6.25 × height (cm) - 4.92 × age (y) - 161