Your body can produce all but nine of these amino acids. The nine that can not be produced are called essential amino acids because they must be supplied by your diet. In order for your body to properly use proteins, all of the essential amino acids must be present in your system. A food that contains all the essential amino acids is called a complete protein. Carbohydrates Most of our energy comes from carbohydrates.
Carbohydrates are chemical compounds of carbon, hydrogen and oxygen.
They provide us with calories which can be converted into energy. It's a good idea to try to eat more complex carbohydrates because your body get longer sustained energy from these foods. Compare these to the simple carbohydrates such as cookies, candy bars and other sugar foods which provide a quick jolt of energy, but then leave your body craving more. While too much fat is bad for your health, we do need some to survive. By cutting down on your fat intake you can reduce your chances of developing heart disease or cancer, not to mention staying in better physical shape and maintaining a healthy weight.