Have you ever been told:
“You only snore when you're lying on your back.”
Perhaps you don't snore when you're awake, you don't seem to snore when sleeping on your side, and yet as soon as you roll onto your back, the snoring starts.
If that sounds familiar, you're not imagining it.
Your sleeping position can influence how easily air moves through your upper airway while you're asleep.
For some people, snoring is therefore much more noticeable when they sleep on their back.
Let's look at why.
What happens when you sleep on your back?
When you're awake, the muscles and tissues around your upper airway help keep the airway open.
When you fall asleep, these muscles naturally relax.
If you're lying on your back, gravity can allow the tongue and other soft tissues in the upper airway to move backwards. This can make the airway narrower and cause the surrounding tissues to vibrate as air passes through.
That vibration is what creates the familiar sound of snoring.
So your position isn't necessarily causing your snoring.
It may simply be making an existing tendency to snore more noticeable.
Why don't I snore when I'm on my side?
When you're lying on your side, gravity affects the structures around your airway differently.
For some people, this allows the airway to remain more open and reduces the vibration that produces snoring.
This is why healthcare guidance commonly recommends trying side sleeping for people whose snoring is worse on their backs.
But there's an important point:
Side sleeping doesn't work for everyone.
Some people may still snore on their side because their snoring is influenced by other factors, such as:
- Nasal congestion
- The anatomy of their airway
- Alcohol close to bedtime
- Smoking
- Changes associated with age
- The structure of the jaw or tongue
- Other sleep-related breathing problems
That's why understanding why you snore is more useful than assuming there is one solution for everybody.
Is back sleeping bad for you?
Not necessarily.
Sleeping on your back is a perfectly natural sleeping position, and many people sleep comfortably this way without significant snoring or breathing problems.
The issue is whether your particular sleeping position is contributing to your symptoms.
If you only snore on your back but feel well rested and have no other concerning symptoms, trying a different sleeping position may be a simple place to start.
How can I stop myself from rolling onto my back?
If you know that your snoring becomes worse when you roll onto your back, you can experiment with ways to encourage side sleeping.
Try a pillow between your knees
A pillow between your knees can make side sleeping more comfortable and may help you maintain the position.
Use a supportive pillow
A pillow that keeps your head and neck comfortably aligned may make side sleeping easier.
Try a positional aid
There are pillows, wedges and other products designed to discourage people from rolling onto their backs.
Some people also use simple positional techniques to make sleeping on their back less comfortable.
The goal isn't to force yourself into an uncomfortable sleeping position.
It's simply to find a position in which you breathe and sleep comfortably.
What if I still snore when sleeping on my side?
This is an important question.
If you've changed your sleeping position but continue to snore regularly, there may be other factors contributing to your snoring.
For example, you might have:
Nasal congestion
A blocked nose can make breathing through your nose more difficult and contribute to snoring.
Airway anatomy
The natural shape and structure of your nose, jaw, tongue and throat can influence how easily your airway remains open during sleep.
Alcohol
Alcohol can increase relaxation of the muscles around the upper airway and may make snoring worse.
Age
Changes in muscle tone and airway tissues as we get older can influence snoring.
Sleep-related breathing problems
Snoring can sometimes occur alongside obstructive sleep apnoea, particularly when there are other symptoms such as breathing pauses, gasping or choking during sleep and significant daytime sleepiness.
Could my partner's observation actually be useful?
Absolutely.
One of the strange things about snoring is that you often don't know exactly what you're doing while you're asleep.
Your partner may notice that:
- You start snoring shortly after falling asleep
- The snoring gets louder when you roll onto your back
- The snoring becomes quieter when you turn onto your side
- Your breathing sounds different at different times during the night
That information can actually be useful when you're trying to understand your sleep.
If you're unsure, you could even keep a simple note for a few nights:
Position → Snoring → How you feel the next morning
You may start to see a pattern.
Can an anti-snoring mouthpiece help if I sleep on my back?
For some people, yes.
Mandibular advancement devices are designed to hold the lower jaw in a forward position during sleep. This can help increase space in the upper airway and may reduce snoring in suitable people.
An oral appliance can therefore be an option for people whose snoring isn't completely resolved by changing position.
However, not every cause of snoring is the same, so an anti-snoring mouthpiece isn't automatically the right answer for everyone.
If you want to understand how they work, we've explained it here:
How Do Anti-Snoring Mouthpieces Work?
And if you're considering SnoreMeds:
Choosing the Right SnoreMeds Mouthpiece Fit
When should you investigate your snoring?
Occasional snoring isn't necessarily something to worry about.
But if your snoring is loud, persistent or affecting your sleep or your partner's sleep, it's worth looking into.
You should speak to a healthcare professional if you or your partner notice:
- Breathing pauses during sleep
- Gasping, choking or snorting
- Significant daytime sleepiness
- Waking frequently during the night
- Morning headaches
- Difficulty concentrating
- Snoring that is having a substantial impact on your daily life
These symptoms can be associated with obstructive sleep apnoea, which requires appropriate medical assessment.
The bottom line
If you only snore when you sleep on your back, your sleeping position may be contributing to the problem.
For some people, sleeping on their side can reduce snoring because it may help prevent the tongue and other relaxed tissues from narrowing the upper airway.
But if you continue to snore regardless of position, there may be other factors involved.
The important thing is not to assume that one cause or one solution fits everyone.
Start by paying attention to your sleeping position.
Notice when you snore.
Listen to what your partner tells you.
And if your snoring is persistent or accompanied by breathing pauses, gasping, choking or significant daytime sleepiness, get it properly assessed.
Looking for another option?
If your snoring appears to be related to the position of your jaw and upper airway, an anti-snoring mouthpiece may be worth exploring.
Stop Snoring, Change Your Life.
You may also be interested in
Why Do I Snore Even When I'm Not Overweight?
Understand the other common factors that can contribute to snoring.
SnoreMeds is designed to help reduce snoring. It is not intended to diagnose, treat or cure sleep apnoea. If you experience breathing pauses, gasping, choking or significant daytime sleepiness, please speak to a healthcare professional.