A high basal metabolic rate is a measurement of the body’s energy metabolic rate of more than 15% per unit of time, and is most commonly used to determine the basal metabolic rate of patients with hyperthyroidism, which ranges from 20% to 80%. or people with hyperadrenocorticism. The basal metabolic rate is measured in the morning after waking up, before eating, in a wakeful state, with the ambient temperature controlled at about 20°C. The heart rate is measured by adding the value of the pulse pressure difference and subtracting 111, and the resulting value is taken as a percentage, with the normal value being between plus or minus 15%.