Resting metabolism contributes up to what percentage of daily caloric expenditure?

Resting metabolism, or resting metabolic rate (RMR), represents the amount of energy expended by the body at rest to maintain essential physiological functions such as breathing, circulation, and cellular processes. This metabolic activity constitutes the largest portion of an individual’s total daily caloric expenditure.

Research indicates that resting metabolism typically accounts for approximately 60-70% of total daily energy expenditure in most individuals. This range encompasses variations due to factors such as body composition, age, and genetics. Other components of energy expenditure include physical activity and the thermic effect of food, but these account for significantly less of the total energy expenditure compared to resting metabolism.

This crucial role of resting metabolism highlights the importance of understanding how our bodies utilize energy at rest, influencing overall fitness, weight management, and metabolic health strategies.