Basal metabolic rate refers to the level of energy consumption per unit time measured while still in a quiet and fasting state, usually the indicator of oxygen consumption is used as the indicator of basal metabolic measurement rate, the basal metabolic rate of normal people is minus 10% to positive 15%. 15%. However, in some diseases, such as hyperthyroidism, hyperadrenocorticism, fever, abnormal heart and lung function, leukemia, malignant tumor, AIDS, etc., the basal metabolic rate increases significantly, but in hypothyroidism, anorexia nervosa, hyperalgesia, the basal metabolic rate decreases significantly.