01. Calories: an introduction
When the magic of the calorie was first explored in the 1890s, the concept of dieting wasn't given much thought. In fact, it was a lot more fashionable to be voluptuously rounded.02. Energy input
Love eating? The good news is that food must be supplied regularly to meet the energy needs of the body. 03. Energy output
The most basic dietary guideline is to balance energy intake with energy output. This means that as long as you burn what you eat, your weight will stay the same. 04. Metabolism
To be able to understand the significance of the calorie, energy metabolism needs to be understood. Luckily, the concept is quite simple. |
05. Calories explained
Energy can be measured in two types of units: calories and joules. The term "kilocalorie" is, however, popularly referred to as "calorie". 06. More than combustion engines
Protein, carbohydrates and fat are handled by the body in different ways and certain conditions need to apply for food to be turned into fat or for fat to be removed. | 
