The daily energy requirement of the body varies from individuals to individual and depends on the following factors :
a. Age
* Children need more energy for growth compared to adult.
* The basal metabolic rate is higher in children and adolescents because of their rapid growth rates and active lifestyles.
b.Sex
*Young male need more energy than young female.
This is because the basal metabolic rate of young male adult is higher than that of female.
c.Body weight
*The basal metabolic rate is proportional to the surface area of the body.
*Individuals of a large size and with a big body need more energy than small sized persons with a low body weight .This is because high basac metabolic rate in the large individuals.
d.Occupation
* Heavy physical work requires more energy than one whose occupation is sedentary.
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