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# Human energy expenditure defined.
- URL: https://jasontucker.blog/human-energy-expenditure-defined/
- Published: 2006-04-10T09:49:18.000Z
- Updated: 2006-04-10T09:49:18.000Z
- Author: Jason Tucker
- Tags: #wordpress

About 70% of a human’s total energy expenditure is due to the basal life processes within the organs of the body: liver, 27%; brain, 19%; heart, 7%; kidneys, 10%; skeletal muscle, 18%; other organs, 19%. About 20% of one’s energy expediture comes from physical activity and another 10% from thermogenesis, or digestion of food.