Adult women’s basal metabolism is around 1,200 calories per day. However, it is affected by body weight, age and physical health. Basal metabolism refers to the energy requirement of the body to maintain basic physiological activities of the body when the body is fasting, awake and quiet, and the ambient temperature is 18～25℃. The amount of basal metabolic energy required per square meter of body surface area per unit of time is called the basal metabolic rate. This value is influenced by weight, age, and health factors. For example, basal metabolic energy expenditure increases with weight gain, decreases with age, and is elevated or decreased in women with thyroid dysfunction. It is recommended that people with abnormalities in basal metabolism seek medical attention.