Unlike the people who lived a hundred or even just sixty years ago, our air is polluted, our bodies are poisoned, and our lungs are clogged. As a result, we only absorb half the oxygen that our ancestors had available. However, we urgently need oxygen to produce healthy cells and keep existing tissue functioning. Due to the reduced oxygen intake, the body lacks the necessary oxygen enrichment to adequately combat and inhibit bacteria and viruses that produce toxins and lead to organ weakening and disease. In the short term, this means a lack of energy and possible mental disorders. In the long term, it can lead to cancer and cardiovascular diseases. It describes this in clear, simple language, sprinkled with amusing illustrations.