CPAP or Constant Positive Airway Pressure is a mode of artificial ventilation of the lungs with the creation of positive pressure in the airways after exhalation. Currently, CPAP-therapy is used for the treatment of snoring, sleep apnea treatment, arterial hypertension, cardiovascular diseases, daytime sleepiness, obesity, impotence, insomnia, and depression. How can CPAP-therapy cure so many diseases? It is believed that all of these diseases are closely associated with a disturbance of normal sleep.