Final answer:
The body uses resting metabolic rate (RMR), diet-induced thermogenesis, and physical activity to maintain necessary body functions.
Step-by-step explanation:
The body uses this energy to maintain necessary, involuntary body functions, also called resting metabolic rate (RMR), to digest nutrients, or diet-induced thermogenesis, and for physical activity.
The resting metabolic rate (RMR) refers to the energy required by the body to maintain basic bodily functions when at rest. It includes functions such as breathing, circulation, and maintaining body temperature.
This energy consumption accounts for about 75% of calories burned in a day.
Diet-induced thermogenesis is the energy expended during digestion and absorption of food.
It occurs when the body breaks down nutrients, such as carbohydrates and proteins, and converts them into usable energy.