The calories you burn or use each day is also known as calorie expenditure.
It includes the following three components:
Resting energy expenditure. Which refers to the calories your body uses during rest for functions such as breathing and blood circulation.
Thermic effect of food. This involves the calories your body uses while digesting, absorbing, and metabolizing food.
Activity energy expenditure. This refers to the calories you expend during sports like exercise and non-exercise related activities like performing household chores.
If you provide your body fewer calories than it needs to support these three components of calorie expenditure, you put your body into a caloric deficit which results in weight loss.
