Examples of what can cause snoring...
1) The throat may be weak and close down when sleeping. This is the most common cause of sleep apnea, very serious condition where snoring is just a one sign.
2) Your tongue may drop into your throat when you sleep and block it. The tongue is a muscle and if that muscle is weak, then it s more likely to drop into the throat.
2) The tongue often falls into the throat, when it is too weak, and blocks it. This may happen even if you sleep on your side.
4) I mentioned the soft palate before. If it is weak, then it will flap around more easily and make the snoring sound. Notice that most of the time, the soft palate is not too big. It s too weak.
5) I often say, no muscle is an island meaning, every muscle in your body is interconnected. If you ve tense shoulders or neck, all the muscles around your throat will be more tense and put pressure on it. The same way as if you squeeze a plastic bottle.
6) Finally, anything that builds up in your throat will work as a dam for your breathing passage. The most common dams are fat or cigarette tags in the throat or allergy in the nasals.
6) Anything that might gather in the throat, like fat or tar from cigarette smoke, will narrow the throat and cause snoring.