First, it’s important to understand what metabolism is. Metabolism refers to the set of chemical reactions that occur in the body to maintain all vital functions: respiration, digestion, circulatory systems (lymphatic and blood), thermogenesis, which corresponds to the regulation of body temperature, cell renewal, etc. In other words, it is the body’s “engine,” the process that converts the food you eat into usable energy.
There are two processes:
Catabolism: the breakdown of nutrients (carbohydrates, fats, proteins) to produce energy.
Anabolism: the production of compounds necessary for the growth and repair of tissues (such as muscles).
Basal Metabolism (or BMR) represents the amount of energy, in calories, that the body expends at rest, and therefore the minimum amount of energy it needs. On average, basal metabolism accounts for 60 to 75% of your total energy expenditure, excluding the various activities you may perform each day. The higher your basal metabolism, the more calories you burn naturally.
Several factors influence your metabolism :
Gender: whether you are a man or a woman
Weight
Height
Age
Body composition: distribution of muscle mass and fat mass
Level of physical activity
Hormonal health
Hereditary (genetic) factors
Diet
Metabolic recalibration, or a "metabolic reset," therefore involves addressing some of these factors—such as diet or exercise—to better boost metabolism and burn more energy on a daily basis. It is a useful strategy for weight loss, but not only for that purpose.











