Snoring may be related to physiological causes such as fatigue, incorrect sleeping position, or respiratory diseases such as colds and enlarged tonsils. 1. Physiological reasons. When a person is too tired and sleeps in an incorrect position, it may cause obstruction of the respiratory tract and weakening of respiratory airflow during sleep, resulting in snoring. 2. Pathological reasons. When you have a cold, nasal congestion can lead to open-mouth breathing, resulting in snoring; nasal polyps, enlarged turbinates, enlarged tonsils, deviated septum, adenoid hypertrophy can lead to narrowing of the oropharyngeal and nasopharyngeal airways, limiting the passage of airflow, resulting in snoring. When long-term snoring seriously affects your life, you should actively seek medical attention, clarify the cause under the guidance of your doctor, and actively treat it.