Food and digestion: Age - energy needs for adults decrease as they age.
Activity levels - the more active, the more energy required.
Pregnancy - energy is needed to support the growth of the fetus and to support the mass of the baby that will be carried around.

Question

Age - energy needs for adults decrease as they age. 
Activity levels - the more active, the more energy required.
Pregnancy - energy is needed to support the growth of the fetus and to support the mass of the baby that will be carried around.

Memorable Condor · Accepted Answer

What factors affect the amount of energy a person needs ?

Food and digestion

Age - energy needs for adults decrease as they age. Activity levels - the more active, the more energy required. Pregnancy - energy is needed to support the growth of the fetus and to support the mass of the baby that will be carried around.

What factors affect the amount of energy a person needs ?

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