=Regularity of meals.=——More important than the number of meals is regularity as to time of eating and amount of food. Training for the digestive tract is just as important as training the eye or the hand or the brain. We cannot expect good digestions if we have a hearty luncheon to-day, none at all to-morrow, and perhaps a scanty and hasty late one the next day. To take food into the stomach between meals is to demoralize the digestive system. Foods that are excellent as part of a meal provoke headaches and bad complexions, and many symptoms of a protesting stomach, when taken between meals. The younger the person, the more important is regularity. Little children soon suffer if their meals are not “on the minute.” Adults have more difficulty in controlling their time, but if they have to be late to meals, they should be more careful than usual to eat slowly and to choose plain simple food that will digest easily. =Mental attitude toward meals.=——Good food may be provided at the proper time and yet the members of a family may fail to keep well and happy unless they come to meals in the right condition. Haste, chill, exhaustion, anxiety, excitement, fretfulness, or anger may interfere with the digestion of the most digestible of meals. Orderly table service, good manners, and cheerful conversation are very important factors in the success of a meal. Peace and joy as well as “calories” are watchwords of good nutrition. =Balanced meals.=——Having determined how many meals to serve in the day and what their hours shall be, the next question is how to choose and distribute the constituents of the day’s ration so as to promote digestibility and satisfaction. A meal of pure protein, or fat, or carbohydrate would not be relished, and would have some physiological disadvantages. Digestion is likely to be more complete on a mixed diet. A meal of carbohydrate alone leaves the stomach more quickly than any other kind, and one would feel hungry before the next meal, though one might have had plenty of fuel; a meal of fat alone would leave the stomach very slowly, and one would not have so good an appetite for the next meal; a meal of pure protein would stimulate heat production without any particular advantages, except possibly in very cold weather: it would be decidedly undesirable in hot weather. For these and other reasons it is best to have the different foodstuffs represented in each meal, and to see that no one contains an excess of fat, which tends to retard all digestion. This is what is usually meant by a balanced meal, but it may also include care that about the same proportion of fuel is served at the same meal each day. A meal does not need to be “balanced” in quite the same sense as a day’s ration. The latter must have a definite amount of fuel, a suitable proportion of protein, ash well represented, some food for bulk, the whole selected with regard for the physical condition, tastes, habits, and pocketbooks of those to be fed.