As soon as the weather gets cold, put on your overcoat every time you go outdoors, and take it off as soon as you come into the house. This is troublesome for boys and girls to do, because they want to run in and out of the house so often; but on the other hand, think of all the cells you will kill if you do not do this, and you will certainly consider it worth while to take off your coat and put it on again.
Questions. 1. How does keeping the body equally covered protect the cells? 2. Give reasons for not wearing too heavy clothing. 3. When is it safe to sit in a draft, and when dangerous? 4. What is the danger of keeping on wet shoes or other damp clothing? 5. When and why should overcoats be worn?
Remember. 1. Clothing should be just heavy enough to keep the body warm all the time. 2. Never take off your coat or sit in a draft when you are too warm. 3. Since wearing damp clothing causes a great deal of sickness, change your clothes as soon as they become wet or damp. 4. Do not forget to take your umbrella when it is raining and to wear your rubbers when the ground is wet. 5. In cold weather wear your overcoat when you are outdoors, but take it off when you come into the house.
[CHAPTER IV]
THE USES OF FOOD
We kill a great many of the cells in our bodies by starving them; either we do not give them enough food or we do not supply the right kind of food.
Why the body needs new cells
Not only must we feed the cells in our bodies, but we must be constantly making new ones, for in all our work or play, awake or asleep, we are constantly using up certain cells. These cells are used to make the body go, just as the engine uses coal to form the steam that gives it power to run. Boys and girls grow fast and, of course, if they expect to become well men and women, they must make a great many new cells all the time, in addition to those used in doing the work of the body. If we are to make new cells we must have the right kind of food with which to make them.