Metabolic rate can be initially determined by general performance, basal metabolic rate and common influencing factors. 1. General performance: Metabolism is the general term for a series of chemical reactions in the body used to maintain life, including the process of decomposition and absorption, synthesis of energy, and excretion of waste. Fast metabolism is characterized by fast heart rate, easy sweating, frequent bowel movements, and high intake of food but unchanged or reduced body weight. Slow metabolizers have a slow heart rate, are chilled, have fewer bowel movements, and consume less food but have the same or increased body weight. 2. Basal metabolic rate (BMR): BMR can be used to determine the speed of metabolism. There are various ways to calculate the basal metabolic rate, the most commonly used is: in the early morning before waking up to eat, absolutely lying down in a state of wakefulness, the ambient temperature is about 20 ° C, the basal metabolic rate of % = (pulse rate + pulse pressure difference) – 111. 3. Common Influences: Metabolic speed is influenced by a number of factors. The older you are, the slower your metabolism. Men have a faster metabolism than women under the same conditions. Patients with hyperthyroidism, tuberculosis, and malignant tumors have a faster metabolism than healthy people. When abnormal metabolic rate occurs, you should seek medical attention to avoid delay.