According to Height Exercise and Calories Food and Calories 1. High calorie foods make more energy. Energy is used by the body for walking, sitting and various activities.
Excess calories leads to weight gain.
Calory requirements of a person depend upon frame, metabolic rate, age, climate and the type of work he does. Persons of different metabolism will burn differing amounts of calories in the same activity. Persons of different weights will use calories proportionate to their weights. A person of a average metabolism of 40 kg. There are 3,500 calories to one pound of body weight.