, as if you would like to fill yourself as full as you could hold. If you have had a good night's sleep and a good

hings are happening: one, that you are breathing faster than you were before; the other, that your heart is

ps so hard that it almost hurts. What is your heart doing? It is pumping; it is try

GOOD PREPARATION

t down, and out pours the water through the spout; and, as you keep pumping, the water spurts out every time you press the handle down. It is hard wo

HEAR

are the arte

ver the body. If you put your finger on your wrist, or on the side of your neck, you can feel a

shutting your hand around it, so the big heart muscle squeezes the blood out of the heart. It squeezes it out from one side of the heart; and then, when it lets go, the

food to burn, and warm you up, the "ashes" and the "smoke" go back into the blood and dirty its color from red to purple. The

and we cannot see them. The pipes that carry the purple blood from the muscles and other parts back to the heart again, we call veins; and some of these are so close to the surface that

OF DOORS TILL THE BEL

walls of the smallest of the blood vessels, for these walls are very thin. In the same way, when waste passes from the

inute when you are well. Look at the second hand of a watc

r muscle, must have plenty of good red blood to feed on. You put food into the blood by eating good breakfasts and dinners. The more you run and jump and play, the more work the heart h