Everybody should have some work to do. Boys and girls should learn that work is a part of life, though they should not be expected to do too much. They should not be required to get up at four o'clock in the morning and work until eight, then go to school until four in the afternoon, and then work again until dark. They cannot do this and keep well. Such children will surely neglect their lessons and will fail to keep up in their classes. It is not the children's fault, but the fault of the people who give them so much to do outside of school. Sometimes bright children fall behind in their classes and seem to be sleepy during school hours. Very often these children do not have to do any work at home, but play all the time they are out of school. We usually find that these children not only play all the afternoon, but also go to parties at night and often stay up until midnight. [Illustration: FIG. 29. Children work when they play. The little girl skipping rope is killing the body cells by overwork; she has skipped more than one hundred times and is exhausted.] [Sidenote: Ways in which children overwork their bodies] You may think it is not work to go to a party, but it really is. You are working the muscles and the cells of your brain when you are playing games, and these get tired from play work just as they do from working. It is more fun to do play work than to do real work, but the cells are tired and need rest after either kind of exercise. When you go to a party and stay up until midnight, you do not get nine hours of sleep. How do you expect the cells of your bodies to get enough rest when you treat them in this way? Another thing you do at parties is to eat food that tastes good, but which is not good building material or nourishing for the cells of the body. These things eaten late at night stay in your stomach long after you have gone to bed, and the cells of your stomach do not have a chance to rest at all. Children should have their parties in the afternoon. You can have just as much fun at a party in the afternoon as you can at night, and then your stomach will have time to dispose of the cake and candies you have eaten, and will be ready to rest when you go to bed. Small children should be in bed by eight o'clock at night, and even big girls and boys should be asleep by ten o'clock every night. If you do not give your bodies rest, you can never grow into strong men and women. [Sidenote: The importance of regular meals] We have learned that every part of the body needs regular rest. Your stomach is a part of your body. In the stomach and intestines all the food is changed so that the little cells can make use of it. Do you think the cook would serve good meals if she were kept cooking all the time, both night and day? You know she would soon stop cooking for you if you did not give her time to rest. Your stomach does work that is even more important to you than cooking.