Basal metabolism is usually calculated using basal metabolic rate, and the most common formula for calculating basal metabolic rate in girls is (pulse rate + pulse pressure) – 111. Basal metabolic rate is the rate of energy metabolism when the body is in an extremely quiet and awake state and is not affected by factors such as food, mental stress, muscle activity, or ambient temperature. There are various formulas for calculating basal metabolic rate, the most commonly used of which is basal metabolic rate (%) = (pulse rate + pulse pressure) – 111, others are basal metabolic rate (%) = 0.75 * (pulse rate + pulse pressure difference * 0.74) – 72 and basal metabolic rate (%) = 1.28 * (pulse rate + pulse pressure difference) – 116. After the calculation, it is recommended to go to the hospital if there is any abnormality in the basal metabolic rate.