in the liver and skeletal muscles. Some of the extra glucose is also changed into fats and stored in the fatty tissue of the body. When your body needs extra energy in a hurry, as when exercising, it can quickly change the stored glycogen back into glucose.
Ordinarlily protein is not a source of energy for your body. It is used, instead, to build and repair body tissue. Protein is found in foods such as pulses, nuts, meat, poultry, fish, eggs, cheese and milk. The only time your body uses protein for energy is when the foods you eat contain more protein than your body needs for building and repairing tissue. In such a situation, your body changes the extra protein into glycogen or fat and stores it for future use as source of energy.
Fat is a reserve source of energy for your body. Fats are changed by the body into fatty acids and stored in the body tissues for use during long periods without food. Fat is found in meat, fowl and dairy products such as milk, butter and cheese, as well as in oils from corn, peanuts, etc.
One other factor must be mentioned to complete the story of how your body uses the food you eat as a source of energy. For glucose to be used by the cells of your body as a source of energy or stored for future use, insulin must be present in the blood stream. Insulin is one of the many different kinds of hormones or chemicals produced by various glands in your