½ cup fruit 1 egg 1 slice toast 1 teaspoon butter 1 glass milk Clear coffee or tea LUNCH Sandwich: 1 slice bread 1 teaspoon butter 1 ounce lean meat 1 hard cooked egg wedge of raw cabbage whole raw carrot fresh fruit 1 glass milk LUNCH Sandwich: 2 _thin_ slices bread 1 ounce lean meat 1 hard cooked egg 1 teaspoon mayonnaise lettuce 2 stalks celery 1 small cucumber fresh fruit 1 glass milk LUNCH Sandwich: 2 _thin_ slices bread 2 ounces chicken or meat chopped and mixed with 1 tablespoon mayonnaise 1 tablespoon chopped celery and a little chopped onion large fresh tomato ½ green pepper fruit 1 glass skim milk DINNER 3 ounces meat, fish, or poultry ½ cup vegetables from Group I and Group II 1 glass skim milk ½ cup fruit—fresh, or cooked or canned without sugar UNDERWEIGHT AND ITS DANGERS Anyone 20 percent or more below his best weight is considered underweight. Definite underweight is not desirable in young people who are still growing. It may be a symptom of disease. The glandular disorders so often erroneously blamed for overweight are much more likely to show themselves in loss of weight or inability to gain. Even when there is nothing wrong, people whose weight is too far below normal are more likely to suffer from fatigue and poor physical endurance. Resistance to infection is often lowered. Tuberculosis strikes more often among adolescents and young people who are underweight than it does among those whose weight is closer to what it should be. _What Causes Underweight?_ Certain diseases and glandular disorders can cause underweight. In healthy people, however, underweight comes from eating too little, from poor eating habits, from over-activity or too little rest, and from worry or prolonged tension. Many people eat too little for much the same reasons which make others eat too much. Habit frequently plays a part. Meals are irregular in some families, sometimes poorly prepared, and eating is considered the least important of the day’s activities. It is not surprising if the children from such families grow up with an indifferent attitude toward food. Emotions may also play a part. The feeling of being unloved, dissatisfaction with personal relationships, discontent over job, money, or social restrictions, and other reasons of this kind cause some people to react with indifference to eating just as they cause others to overeat. Keen rivalry, a wish to take part in everything, or too great an absorption in school or social activities sometimes cause over-activity and underweight among adolescents. _How to Gain Weight_