Common Sleep Positions: How Your Sleep Position Affects Your Body and Your Sleep
Your sleep position can affect spinal alignment, pressure points, breathing, and how rested you feel in the morning. But there is no single “best” sleeping position for everyone. The right mattress can support your natural sleep position, while the wrong mattress can make it harder for your body to relax and stay comfortable throughout the night.
Most people naturally settle into a favorite sleeping position—on their side, back, stomach, or some combination of the three. While we may not remain in one position all night, our preferred position can tell us a lot about what our body finds comfortable.
Understanding how different sleep positions affect the body can also help you choose a mattress that works with your body rather than against it.
Why Does Your Sleeping Position Matter?
We spend roughly one-third of our lives sleeping. During those hours, your body is relatively inactive and remains in the same general posture for extended periods.
A good sleep position allows the natural curves of the spine to remain supported while minimizing unnecessary pressure on muscles and joints. Poor alignment or excessive pressure can contribute to discomfort that interrupts sleep or leaves you waking with a stiff neck, sore shoulders, or an achy lower back.
Sleep position can also influence breathing. For some people who snore or have obstructive sleep apnea, sleeping on the back can make breathing problems worse, while side sleeping may help keep the airway more open.
The goal isn’t necessarily to change your natural sleeping position. Instead, your mattress and pillow should accommodate it.
The Three Most Common Sleep Positions
1. Side Sleeping
Side sleeping is the most common sleep position and can be an excellent position for many people. It can help maintain an open airway and may reduce snoring and some symptoms of obstructive sleep apnea compared with sleeping on the back.
Side sleeping does, however, concentrate more of your body weight on the shoulder and hip.
This makes pressure relief particularly important.
A mattress that is too firm may create uncomfortable pressure at the shoulder and hip. A mattress that is too soft can allow the hips to sink too deeply, potentially pulling the spine out of alignment. The ideal surface allows the shoulder and hip to sink enough for comfort while still supporting the waist and pelvis.
A supportive pillow is equally important. The pillow should fill the space between your head and the mattress so your neck remains reasonably aligned with the rest of your spine.
The fetal position
The fetal position is a variation of side sleeping in which the knees are drawn toward the chest. Many people find it naturally comfortable and secure.
Keeping the body relatively relaxed rather than curling extremely tightly can help maintain a more neutral position for the spine.
What Mattress Works Best for Side Sleepers?
Side sleepers generally benefit from a mattress with good pressure relief combined with underlying support. Moderately firm mattresses are often recommended because they can provide cushioning for the shoulders and hips without allowing the body to sink excessively.
Natural latex, wool, and other resilient materials can be useful because they can provide cushioning without the slow, deep sinking sensation associated with some softer foams.
The important question isn’t simply whether a mattress is “soft” or “firm.” It is whether the mattress allows your body to settle into a comfortable, supported position. An all natural latex mattress like the Ergovea Valencia can be a good choice for side sleepers.
2. Back Sleeping
Back sleeping is the second-most-common sleep position. Lying on your back allows the body to distribute its weight relatively evenly across the mattress and can make it easier to maintain a neutral spinal position.
For some people with back or neck discomfort, back sleeping can be particularly comfortable. A pillow under the knees can also reduce tension and help maintain the natural curve of the lower back.
But back sleeping isn’t ideal for everyone.
For some people, sleeping on the back can increase snoring or worsen obstructive sleep apnea because gravity can allow tissues in the upper airway to move backward.
Back sleeping can also aggravate nighttime heartburn or reflux for some people, although elevating the upper body may help.
What Mattress Works Best for Back Sleepers?
Back sleepers need a mattress that supports the body’s heavier areas—particularly around the pelvis and midsection—without creating excessive pressure.
A mattress that is too soft may allow the hips to sink too deeply, creating an exaggerated curve in the lower back. But a mattress that is excessively firm may not allow the natural curves of the spine to settle comfortably against the surface.
This is one reason medium to medium-firm surfaces are often a good starting point for back sleepers.
Again, there isn’t one firmness level that works for every person. Body weight, body shape, mattress construction, and personal preference all influence how a mattress feels. A firm hybrid mattress like the Naturepedic Serenade firm is a good place to start.
3. Stomach Sleeping
Stomach sleeping is the least common of the three major sleep positions. Some people simply find that sleeping on their stomach feels natural and comfortable.
There is nothing inherently wrong with being a stomach sleeper if you wake feeling rested and free of discomfort. However, this position can create some challenges.
When you sleep on your stomach, you generally have to turn your head to one side to breathe. Keeping your neck rotated for hours can contribute to neck stiffness and discomfort. The position can also place additional stress on the lower back and shoulders.
The mattress can make this problem better—or worse.
A mattress that allows the abdomen and hips to sink too deeply can exaggerate the curve of the lower back. A more supportive surface can help keep the torso from sinking excessively.
What Mattress Works Best for Stomach Sleepers?
Stomach sleepers typically need good support with limited sinkage around the hips and abdomen.
A relatively supportive mattress can help prevent the middle of the body from sinking too deeply. A thinner pillow can also help reduce the amount the neck has to bend upward while sleeping face down. The McRoskey Mission Firmmattress fits stomach sleepers.
If stomach sleeping consistently results in neck, shoulder, or lower-back pain, experimenting with side or back sleeping may be worthwhile.
Combination Sleepers: The Forgotten Sleep Position
Many people aren’t exclusively side, back, or stomach sleepers.
You may fall asleep on your side, spend part of the night on your back, and wake up on your side again. These combination sleepers need a mattress that can accommodate movement between positions.
For combination sleepers, a mattress that is extremely soft or extremely firm may make it more difficult to move comfortably from one position to another.
A responsive mattress can be particularly helpful because it allows the body to change positions without feeling trapped in the mattress.
This is one area where traditional natural materials can offer an interesting advantage. Latex, for example, has a naturally resilient feel that provides cushioning while still making it relatively easy to change positions. A mattress like the Williamsco Kingston mattress works well for combination sleepers.
How Your Mattress Can Change Your Natural Sleep Position
Your mattress doesn’t simply support the position you choose—it can actually influence how you sleep.
Think about what happens when you lie on a mattress that is uncomfortable.
You may shift your hips, move your shoulders, bend your knees, or roll onto your side looking for relief. You may wake up repeatedly because pressure is building in one area.
A mattress that properly distributes your weight can make it easier to remain comfortably in your preferred position.
A mattress that is too firm
An overly firm mattress may create pressure at the shoulders and hips, particularly for side sleepers. You may find yourself frequently changing positions to relieve pressure.
A mattress that is too soft
An overly soft mattress can allow heavier parts of the body—usually the hips and midsection—to sink too far into the mattress. This can interfere with neutral spinal alignment.
A mattress that is properly supportive
A well-designed mattress should allow the body to settle naturally while supporting the spine and distributing pressure.
The goal isn’t to prevent movement. Movement during sleep is normal.
The goal is to create a sleep surface that doesn’t force your body to move because of discomfort.
Natural Mattress Materials and Sleep Position
The materials inside a mattress influence how it responds to your body.
Natural latex, wool, cotton, and individually pocketed coils can each contribute different characteristics to a mattress.
Latex is resilient and responsive. It cushions the body while maintaining support and makes changing positions relatively easy.
Wool provides natural cushioning and resilience while also helping regulate temperature and moisture within the sleep environment.
Cotton can provide a breathable, comfortable surface layer.
Pocketed coils provide structural support while allowing different areas of the mattress to respond somewhat independently to the body.
A mattress combining these materials can create a balance between pressure relief, support, breathability, and responsiveness.
That balance is particularly important because your body doesn’t necessarily remain in one position all night.
Don’t Forget the Pillow
Your mattress and pillow work together to create your sleep posture.
A mattress can provide excellent support, but the wrong pillow can still leave your neck out of alignment.
Side sleepers generally need more pillow height because there is more space between the shoulder and the mattress.
Back sleepers typically need less height, with enough support to fill the natural space beneath the neck.
Stomach sleepers often benefit from a very thin pillow—or sometimes no pillow—because a thick pillow can force the neck into greater extension.
The right combination of mattress and pillow should allow your head, neck, shoulders, hips, and spine to remain comfortably aligned.
Is There a “Best” Sleeping Position?
Not necessarily.
For most healthy adults, the best sleeping position is the one that allows you to sleep comfortably, breathe well, maintain reasonable spinal alignment, and wake feeling rested without significant pain.
Side sleeping has advantages for many people, particularly those who snore or experience positional sleep apnea. Back sleeping can provide excellent spinal support for some sleepers. Stomach sleeping may be comfortable for some people but can place additional stress on the neck and lower back.
Rather than trying to force yourself into a particular position, start by paying attention to what your body is telling you.
If you consistently wake with a sore shoulder, hip, neck, or lower back, your sleeping position may be part of the problem—and your mattress may be contributing to it.
Your Mattress Should Work With Your Body
Good sleep isn’t about finding a mattress that forces you to sleep a certain way.
It’s about finding a mattress that supports the way your body naturally sleeps.
Your preferred sleep position, body shape, weight, pillow, and personal comfort all play a role. The right mattress should provide enough support to maintain healthy alignment while providing enough cushioning to prevent uncomfortable pressure points.
At Plank & Coil, we believe the materials and construction of a mattress matter. Natural materials can provide a combination of resilience, breathability, cushioning, and support that helps create a more comfortable sleep environment.