Question

Which component is the largest contributor to total energy expenditure for most individuals?

Answer 1

The largest contributor to total energy expenditure for most individuals is the basal metabolic rate (BMR). About 75% of calories burned in a day go into basic functions.

Step-by-step explanation:

The largest contributor to total energy expenditure for most individuals is the basal metabolic rate (BMR). BMR is the rate at which the body uses food energy to sustain life and perform basic functions. The largest fraction of energy goes to organs like the liver and spleen, with the brain coming next. During exercise, the energy consumption of skeletal muscles and the heart increases. About 75% of calories burned in a day are used for these basic functions.