How much of daily energy expenditure (DEE) does BMR approximately account for?

Basal Metabolic Rate (BMR) is the amount of energy expended while at rest in a neutrally temperate environment, representing the minimum amount of energy required to maintain essential physiological functions such as breathing, circulation, and cell production. It typically accounts for a significant portion of total daily energy expenditure (DEE).

In general, BMR accounts for about 60% to 75% of total daily energy expenditure in most individuals. Given this, the choice indicating that BMR accounts for approximately 75% aligns well with the established understanding of how daily energy expenditure is divided among its components, which also include physical activity and the thermic effect of food. This proportion emphasizes the importance of metabolic rate in overall energy requirements and highlights why maintaining muscle mass can be crucial for weight management, as muscle tissue is more metabolically active than fat tissue.

It is important to recognize that while BMR can vary based on factors such as age, gender, body composition, and genetics, the percentage range of 60% to 75% remains a widely accepted guideline in the field of exercise physiology and weight management.