When virgin forests covered the Earth, and when our oceans teemed with life, the oxygen content in the atmosphere was 38%. Today, it is less than 20%, and even lower in most urban areas. Because of these earth changes, we are all oxygen deficient. Over 90% of the body’s energy is created by oxygen. Every single activity of the body is regulated by oxygen. Without oxygen, we cannot think, feel or act. As well, oxygen deficient cells cannot repair themselves. The more oxygen we have in our system, the more energy we are able to produce. In fact, a good definition of vitality is the body’s ability to assimilate oxygen.