Now, please remember this most important fact――Food, including water, is for the sole purpose of supplying heat to the body and to replace the dead cells which are constantly being cast off in every portion of your body. This decay and birth of the cells of the body goes on in every living thing. When the decay is greater than the repair, some part of your body is dying. In such a condition, you are a fit subject for the attack of some of the many disease germs all around us. It may be a serious one or merely some form of skin disease; then goes, whack! your good complexion. A girl needs more food and at more frequent intervals than a grown woman because, besides keeping up the heat of the body she also has to supply the material for the growing process active in her. The building up of the frame, the full strength of the nerves, the hard working blood, must all be supplied by a surplus of food, for if she eats only enough to supply heat, the other needs of her body will suffer and finally become useless. Now, girls, eat plenty of food that will aid in all your growth. I know some girls who think it is unladylike to have a good appetite; I have treated girls who were really starving themselves because they dreaded to become fat, and I have seen others whose appetite was unnatural because they denied themselves proper food. It is not necessary for me to say any more about the kind of foods to eat; we have already gone into this matter, but remember this, that the degree of energy essentially depends on the nutritiveness of the food you do eat. Not a single gland in the body can do its proper work unless it is supplied with its proper stimulant; and this stimulant is food. If you wish to have a soft, smooth and attractive skin, you must always keep in your mind the fact that it is the glands of the skin that exist for this very purpose. I have said something to you about perspiration and exercise, but beside this activity of the glands, produced by exercise, there is constantly an “insensible perspiration” taking place in every girl. This unnoticeable perspiration amounts daily to about two pints of watery fluid. Think of it! A quart of water leaving your body through the skin every twenty-four hours and in such a way that you do not notice it. You see now why I have laid so much stress upon the statement that you should drink plenty of water, and why the average American girl suffers from poor complexion and constipation. Fat is poured out in this “insensible perspiration.” Even the finger tips will secrete it. If the palm of the hand is cleansed with soap and then with ether; held in the sunlight and observed with a magnifying glass, you can see little bubbles arising which immediately evaporate, leaving tiny drops of an oily substance――fat.