The basal metabolism of an average adult is 1200-1400kcal per day, the fluctuation range may be larger, mainly affected by gender, age, weight, etc., and varies greatly. Basal metabolism refers to the energy that the human body needs to consume to maintain the most basic metabolism of the human body in a quiet resting and awake state. The basal metabolism of an average adult is 1200-1400kcal per day, but it varies greatly, mainly affected by gender, age, height and weight. The basal metabolism of men is faster than that of women; the basal metabolism decreases with age; the heavier the person is, the more energy is needed for basal metabolism; hyperthyroidism patients have a much higher basal metabolism energy requirement. Basal metabolism is relatively difficult to change, but we can increase our metabolic energy consumption by exercising and generating more calories to burn.