Programa Perseo ¡come sano y muévete!
The amount of calories in foods
An organism needs energy to carry out its functions, which include physical exercise, maintaining body temperature, keeping the heart and lungs working constantly, repairing damaged tissue and keeping itself in a perfectly healthy condition (in addition to growth in children). This energy is obtained from food nutrients, principally carbohydrates, fats and proteins, through a process of oxidation (combustion). The energy obtained is used for all the chemical processes in an organism’s cells, processes which are generally referred to as “metabolism”.
