60 to 75% of total energy expenditures are used for basal metabolism to maintain your body at rest.
The amount of energy used by a person at rest (when fasting and at body temperature equilibrium) as a result of regular cell and organ function within the body is known as the basal metabolic rate. It makes up roughly 60–75% of a person's daily energy expenditure when they have a sedentary job.
Several illnesses linked to significant weight loss, including cancer, sepsis, chronic pulmonary disease, burns, and HIV/AIDS, are associated with sustained increases in basal metabolic rate; however, it is less clear whether these conditions also result in an increase in total energy expenditure.
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