Oxygen: a colorless, tasteless, odorless gas, without which we could not survive, is essential for everyone. But for some people, there is no choice but to have medical assistance and certain oxygen equipment to get enough oxygen into his or her system. When we take a breath, we draw air containing twenty-one percent oxygen into our lungs. It is vital that the oxygen then passes from our lungs into our bloodstream. Oxygen is needed by our organs and tissues to convert the food we eat into heat and energy for the purpose of sustaining life.

If you have ever experienced difficulty breathing, if you have asthma, emphysema, or other have lung problems