Basal metabolic rate is calculated using the formula (pulse rate + pulse pressure) – 111. A basal metabolic rate within -15% to +15% of the calculated value is generally considered normal. Basal metabolism refers to the energy metabolism that maintains the most basic life activities of the human body, and is mainly affected by gender, age, height, weight and health status. The basal metabolic rate is measured in the morning in a quiet state. If the basal metabolic rate is abnormal, it means that the patient may be suffering from some kind of disease. Abnormal metabolism may be caused by diseases such as hyper- or hypothyroidism. When abnormalities in basal metabolic rate are detected, consult a doctor for consultation and treatment to avoid delays.