When people are asleep, all the muscles of the whole body are in a relaxed state, including the uvula hanging in the throat (commonly known as "small tongue"). Snoring occurs when the airflow in and out of the human body impacts the uvula. Another reason is that my nose is blocked during sleep, so I can't breathe, so I can only breathe through my mouth. When people breathe through their mouths, the airflow will vibrate the soft palate above their mouths and make them snore.
So, why do some people have a stuffy nose when they sleep? Mostly because the head is in the wrong position. Therefore, when we sleep, we should pay special attention to the position of our head, try to sleep in the position of lying on our side, and at the same time develop the habit of breathing through our nose, which can not only avoid snoring, but also filter out some dust in the air and protect the respiratory tract. In addition, some people have nasal congestion due to turbinate hypertrophy and swollen nasopharyngeal lymph nodes. This situation requires timely medical treatment.