A widely used medical practice based on inhalation of a mixture with an increased concentration of oxygen. Oxygen is the most important element that activates the energetic cellular processes in the human body. Under normal conditions, oxygen enters the body through the air thanks to the breathing process.
The oxygen content in the air is about 21%. Oxygen deficiency in cells (hypoxia) leads to functional and biological disorders in various organ systems (first in the respiratory system, then in the nervous and cardiovascular).