energy requirements
Fuel the body
Energy requirements are the amount of energy—typically measured in calories or joules—that a person, organism, or system needs to function.
For humans, this means the calories needed to maintain body weight and support daily activities: Her energy requirements increased during pregnancy.
The term appears in nutrition science, biology, and engineering contexts where calculating fuel or power needs matters.
- resting heart rateIdle cardiac rhythm
- caloriesMeasures of food energy
- daily intakeAmount consumed per day
- calorie countingMonitoring dietary energy intake
- food pyramidTriangular dietary guideline chart
wattage · power · metabolism · ATP · glucose · sustainability · respiration · thermogenesis · digestion · nutrients · solar power · fossil fuels · efficiency · power grid · hydroelectricity · fuel · battery · load
energy requirementsenergy output
Work produced over time
energy expenditure · energy production · power output · energy generation · torpor
energy requirementscaloric surplus
Intake exceeds expenditure
energy reserves · energy storage · fat reserves · excess capacity
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