Almost everyone snores now and then, even people who say they never do. It all starts at the back of your throat.
What makes the noise?
When you fall asleep, the muscles in your throat relax. Your airway gets narrower, so the air has to squeeze through. The soft parts of your throat start to flutter like a flag in the wind. That fluttering is the snore you hear.
Why do some people snore more?
Sleeping on your back makes it worse. So do alcohol and a blocked nose. Rolling onto your side often helps, but loud snoring with gasping or pauses in breathing should be checked by a doctor.
One more thing
Strangely, your sleeping brain mostly tunes out your own snoring. The person sleeping next to you is not so lucky.
