For most people, the majority of their total energy expenditure is from their

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Basal metabolism, also known as resting metabolic rate, refers to the energy required to maintain basic bodily functions such as breathing and circulating blood. This typically accounts for the largest portion of an individual's total energy expenditure. Energy intake refers to the amount of energy obtained from food, which is important for overall health but does not directly affect energy expenditure. Physical activity and the thermic effect of food also contribute to energy expenditure but usually to a lesser extent than basal metabolism.

For Most People, the Majority of Their Total Energy Expenditure