Factors Affecting Caloric Requirement
Teens have different caloric intake needs based on a few things. Gender is one of them. Girls need less calories than boys because they don’t have testosterone and have less muscle tissue. Since more muscle burns more calories, boys need to take in more calories. Boys generally need 5-10% more calories than girls, unless the girl is pregnant. Age and activity level also affect caloric intake. An aging body replaces muscle with fat, which burns fewer calories than muscle does. When you are active, you burn more calories. So more active teens need more calories. Very active teens will need 3.5k calories per day while less active teens need less. Bigger and taller kids will need more calories than small and skinny kids as well.
Sources
healthyeating.staple.com/determine-calorie-intake-children-555l.html
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