Sleeping with a mmmmm sound and stretched out is called snoring. Consider sleep related to narrowing of the airway, and incorrect sleeping position may lead to compression of the lungs and cause snoring problems. Factors such as obesity, cold, chronic rhinitis, tonsillitis, deviated nasal septum, enlarged turbinates, narrowing of the upper airway or inflammation can also lead to narrowing of the airway. Long-term airway narrowing may lead to low blood oxygen concentration, causing hypoxia in all organs of the body. Long-term snoring can lead to the development of cardiovascular disease.