Snoring happens for a variety of reasons, but it's most commonly due to your throat muscles relaxing, making your airway narrow during sleep.Quoted From: https://www.modernsleepsolution.com/sleep-disorders/snoring
"Often brushed off as a social annoyance, snoring can be an indication of something much more serious such as sleep apnea. Snoring can also be a major contributing factor for relationship breakups.
Snoring happens for a variety of reasons, but it"s most commonly due to your airway narrowing during sleep. This obstructed or narrowed pathway causes the tissues in your nose and throat to vibrate when breathing during sleep, producing that all too familiar noise. Other contributing factors are caused by problems in the structure of the nose, such as a deviated septum, swollen turbinates, nasal polyps, allergies, and chronic sinusitis.
A more serious cause is sleep apnea, a potentially serious sleep disorder. Sleep apnea happens when breathing is repeatedly reduced or stopped, then starts again.
Here are a few other anatomical issues that may narrow the upper airway which can create airway resistance, thus causing vibration of the tissue that leads to snoring.
Alcohol consumption before bed
Elongated soft palate and uvula
Generally, one or more of these factors contributes to snoring, and your ENT doctor will be able to provide a thorough evaluation by assessing your symptoms.