Energy expended is the total amount of energy your body uses to perform various functions, from basic physiological processes to physical activities and even changes in body composition.
Here's a breakdown:
-
Basal Metabolic Rate (BMR): This is the energy your body uses at rest to keep vital organs functioning, such as your heart, lungs, and brain. BMR accounts for the largest portion of daily energy expenditure.
-
Thermic Effect of Food (TEF): This is the energy your body uses to digest, absorb, and metabolize food. Protein has a higher thermic effect than carbohydrates or fats.
-
Activity Energy Expenditure (AEE): This includes all energy expended through physical activity, from walking and running to more strenuous exercises. AEE is the most variable component of energy expenditure.
-
Non-Exercise Activity Thermogenesis (NEAT): NEAT encompasses all physical activity that is not structured exercise, such as fidgeting, walking around your office, or doing household chores. NEAT can significantly impact overall energy expenditure.
In essence, energy expended represents the calories your body burns throughout the day. It is influenced by factors like age, sex, body composition, activity level, and genetics.
Understanding energy expenditure is crucial for managing weight, optimizing athletic performance, and maintaining overall health.
