Some of you would possibly be scratching your head by currently thinking "what area unit calories? I ne'er eat something known as calories" Well calories could be a easy measuring of energy. we tend to conjointly use the measuring Kilojuel (Kj). A calorie is outlined as just about the energy needed to heat one gram of water by one degree Centigrade. Calories area unit altogether foods that we tend to eat, and fats area unit particularly made in calories.