By consuming foods, we provide the substances necessary for the vital functions in our bodies to continue. However, the meat, bread, fruit or vegetables we consume all has to undergo radical changes, in other words to be digested, in order to be broken down into substances in a form that our bodies can use.

It is the digestion of food that allows a newborn baby weighing between 2 and 3 kilograms to grow into a 1.80-meter, 75 to -80 kilogram adult 20 to 25 years later. The source of this impressive difference in volume is the way in which substances in the food eaten by the child gradually become assimilated by the body. Some of these nutrients provide the necessary energy for living, and others are added to the body and in the form of flesh and bone.

For these chemical processes to take place, a long "conveyor belt" is needed. Special refinery systems need to be located at every point in this channel so that the materials in it can be subjected to change. The channel in question needs to be at least 8 to 10 meters long. However, the human body is only an average of 1.70 to 1.80 meters in height. That means that a canal 10 meters long needs to be squeezed into a body that is five times shorter than it. This requires a very inventive industrial design. Indeed, the human body has been created with just such a characteristic. The alimentary canal in question (mouth, esophagus, stomach, small and large intestines) has been situated within the human body in line with a very special arrangement, under which a 10 meter canal has been carefully packaged into a body only 1.70 meters long.

After entering the body, consumed foodstuffs embark on a 10- meter journey through the digestive system, during which these foods are subjected to a series of mechanical and chemical processes. As they pass through the five-part, 10-meter canal, they are broken down by means of mechanical processes such as grinding, kneading and rinsing, and chemical effects performed by liquids secreted into the canal by various glands.

The digestive system contains the best refinery in the world. The substances taken in by this refining system are first broken down into their raw materials, then sent to be used by the necessary regions of the body. The food you eat at breakfast is subjected to thousands of chemical processes, without you ever being aware of them while you go about your daily life, attend class in school or walk along the street.

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