Snoring is the sound from the vibration of respiratory structures caused by obstructed air movement when breathing while asleep. Snoring is caused by the relaxation of the uvula and soft palate, which can relax enough to potentially partially block the airway when breathing. The result is irregular airflow and vibrations. Almost all treatments for snoring focus primarily on lessening the breathing discomfort by clearing the airway blockage, but so far there is no certain treatment to completely stop snoring. Surgery attempting to widen the airway is quite invasive and carries risks of adverse side effects.