What are Calories?

A calorie is a measure of energy. It is scientifically described as being the amount of energy required to raise the temperature of one gram by one degree Celsius. Calories of a food can also be recognized as a kilocalorie, or one thousand-calorie unit. In order for your body to grow, your body is required to have certain amounts of energy, or calories, depending on your age and height. For example, according to the Food …

…of water, protein, carbohydrates, and fat. The number of calories in a feed depends on how much each of these is present. Proteins and carbohydrates have about four calories per gram while fats have about nine. Water, as your might expect, has no calories. With seven calories per gram, alcohol also increases calories. Ultimately, the older, more inactive, and those who weigh more are going to have more calories than those who are physically fit.