Continuous Positive Airway Pressure is what CPAP stands for this device improves breathing during sleep for those who suffer from sleep apnea, their throat may constrict while they are asleep, causing them to briefly stop breathing. To keep their airway open all night, a CPAP machine continuously pumps air into their mouth or nose.
The air is produced by the machine is carried by the tube and the mask is placed on your face to supply air it Makes the sleep easier.