What Is Metabolism?
Metabolism is the set of chemical processes by which the body converts food into energy and uses that energy to breathe, circulate blood, maintain temperature, repair cells, and move. The energy used at complete rest is the basal metabolic rate (BMR), which makes up the largest share of daily energy use for most people.
What Affects It
Body size and composition, age, sex, genetics, hormones, and physical activity all influence metabolic rate.
Components of Daily Energy Use
Basal metabolism, the energy used to digest food, and physical activity together make up total daily energy expenditure.
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🔗 Related Terms
More Health & Fitness Terms
- Body Composition
- Body Fat Percentage
- Body Mass Index (BMI)
- Calorie Deficit
- Circadian Rhythm
- Estimated Due Date (EDD)
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Last updated: September 29, 2026. This definition is for general educational purposes only. It is not financial, investment, tax, legal, or medical advice, and it does not recommend any product or course of action. For decisions about your own situation, consult a qualified professional.