What is metabolism?
1) Mechanism
Metabolism (pronounced: muh-tah-buh-lih-zum) is a collection of chemical reactions that takes place in the body's cells to convert the fuel in the food we eat into the energy needed to power everything we do, from moving to thinking to growing. Specific proteins in the body control the chemical reactions of metabolism, and each chemical reaction is coordinated with other body functions. In fact, thousands of metabolic reactions happen at the same time - all regulated by the body - to keep our cells healthy and working.
Metabolism is a constant process that begins when we're conceived and ends when we die. It is a vital process for all life forms - not just humans. If metabolism stops, a living thing dies.
2) Ordinal knowledge
As you grow older, your metabolism slows.
You metabolism is the rate in which your body can digest and extract energy from food.
If it is slow, and you eat lots of food, then there will be lots of energy stuck in your stomach which will get stored as fat.
On the other hand, if your metabolism is fast, then energy can be extracted quickly and food is processed fast, therefore the food you eat will not be in your stomach as long, and to retain energy throughout the day, you must eat more. (??)
Proteins
|| control
\/
Eat ===> FOOD → ( METABOLISM ) → ENERGY
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