The Frolov simulator is a portable device for the development of the respiratory tract in various diseases and as their prevention. It contributes to normal lung function and airway hydration. When working with it, it is possible to use additional medicinal substances (oily or water-soluble), which dilute sputum, improve coughing and eliminate spasms. Instructions for using the Frolov breathing simulator guarantees that with correct and daily training, not only the respiratory organs return to normal, but the working capacity of a person as a whole is normalized. During the training period, namely when inhalation or exhalation occurs, resistance is created, metabolism improves in the cells, and physiological reactions develop.