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it moves and does work. Food is necessary to give strength to the body, it is needed to keep up the body heat, and without it the temperatures of the body would quickly fall to that of the air about it and this would be fatal to the cells. Food also furnishes material for the growth and repair of the cells. .
The three classes of foods, are proteins, carbohydrates, which includes starches and sugars, and fats. Lean meats, eggs, milk, peas, beans, and all foods made from grains are rich in proteins. Potatoes, turnips, cabbage, bread, and grains are valuable mainly for their starch. Fruits, sweet potatoes, honey, molasses, and milk contain sugan Fats and oils we get in butter, lard,* fat meat, eggs, cheese, chocolate, nuts, olive oil, and mayonnaise. All three of these classes of foods give heat and strength to the body and the proteins furnish building and repair materials in addition.
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