As noted in the material, each person needs to consume a certain amount of calories daily. It depends on his lifestyle (active or sedentary), as well as on the type of physique, the amount of muscle mass, fat. It turns out that the more the muscles are developed, the more energy is required for the body.
Many factors can affect the metabolic rate. For example, illness or high fever. Also, for a long time, scientists were sure that metabolism slows down over the years. But this turned out to be not entirely true. Metabolism remains largely stable between the ages of 20 and 60, according to a series of studies published this year in the journal Science.