The Body Needs Fresh Air

Air is an invisible, tasteless, odorless mixture of gases surrounding the earth. Air at sea level is composed of 21% oxygen, 78% nitrogen, 1% water vapor, carbon dioxide and traces of ammonia, argon, helium, and other rare gases. Experiments have shown that death will occur from prolonged inhalation of air, in which the proportion of oxygen is much greater than that in which it naturally occurs in the atmosphere. Therefore, we know that the mixture called air is not an accidental compound, but one perfectly adapted by our Creator to the needs of the human body. The first need of all living creatures on this earth is oxygen. They can not live without it. Oxygen must always be present in the air we breathe. All of the trillions of cells in the human body must receive a constant supply of oxygen or those cells will weaken and die. Through the tissue fluids the cell obtains the oxygen it needs and gives up the carbon dioxide it does not need. This transportation of oxygen from the outside air to the tissue cells, and the carrying away of carbon dioxide is done through our lungs. Our lungs are light and spongy in texture. If placed in water, they will float. Normally we breathe about fifteen times a minute, inhaling about a pint of air each time we take a breath. The lungs normally hold about six pints of air, so that about one sixth of the air is exchanged each time we take a breath. A person sleeping uses only about 10% of his lung capacity. Hard work increases lung use to about 50%. The singer or woodwind player uses his lungs almost to the fullest extent possible.