Why do we people snore?

Vibrations of the soft tissues located at the back of the throats cause the noisy, annoying sounds of snoring that prevent non-snorers from getting their sleep. 

The palate, uvula and tonsils are the tissue structures that flap against each other when someone has too much tissue at the back of their mouth or when an obstruction is blocking the air passageway to the back of the throat. Therefore, snoring is a sign of troubled breathing during sleep. The louder the snoring sound, the narrower the opening in the throat.