The common reasons that affect the energy metabolism of human body include hormone secretion, environmental temperature and diseases, etc. If you need to clarify the reasons for the change of energy metabolism, it is recommended to consult a professional doctor in hospital. 1. Hormone secretion: Many glands secrete hormones that regulate energy metabolism, such as the thyroid gland, adrenal glands, pituitary gland, etc., and when their secretion is out of order, it will affect the process of energy metabolism. Thyroid gland, adrenal gland, pituitary gland and other secretion of hormone imbalance, will affect the body’s energy metabolism of high and low. 2. Environmental temperature: the heat or cold of the external environment can affect the level of basal metabolism, such as the body’s energy metabolism decreases in hot weather, and increases when it is cold. 3. Disease: When a person is sick, the body’s energy metabolism may be affected. For example, fever can increase the basal metabolic rate significantly.