The most variable component of energy expenditure is:

Question

Quizplus · Accepted Answer

Activity thermogenesis (or physical activity) is the most variable component of energy expenditure as it is influenced by factors such as occupation, lifestyle, fitness level, and leisure time activities. Basal metabolic rate and the thermic effect of food are relatively stable, while expenditures during sleep are lower compared to waking activities. Bone mass, although it contributes to energy expenditure, is not a variable component.

The Most Variable Component of Energy Expenditure Is