The Effect Your Mattress Has on Shoulder and Hip Pain
- Professor Goodsleep
- Jun 13
- 3 min read
Updated: Jul 3
Why Your Mattress May Be Causing Hip and Shoulder Pain
If you've ever tried lying on a hard floor on your side for an extended period of time, you've probably noticed something pretty quickly: your shoulder starts hurting or your hip starts hurting, and before long you're ready to move.
Why does that happen? It's all about pressure points.
When you're lying on your side, the majority of your body weight is concentrated on two areas: your shoulder and your hip. On a hard floor, those body parts can't sink in at all, so all that pressure stays focused on a small area. The longer you stay there, the more uncomfortable it becomes.
A mattress works the same way—just to a lesser degree.
The Problem With a Mattress That's Too Firm
Many people assume that a firm mattress is always better for support. In reality, support and firmness are not the same thing. A mattress can be supportive without being hard.
When a mattress is too firm for your body type and sleeping position, it doesn't allow your shoulders and hips to sink in enough. Instead, those areas absorb excessive pressure throughout the night.
At first, you may not notice it. But after several hours of lying in the same position, that pressure can lead to shoulder pain, hip pain, arm numbness, tossing and turning, poor sleep quality, and morning stiffness.
Many side sleepers wake up blaming age, arthritis, or yesterday's activities when the real culprit may be the mattress they're sleeping on every night.
Pressure Relief and Spinal Alignment Must Work Together
A good mattress has two jobs:
Relieve pressure points
Keep your spine aligned
If your mattress is too firm, your shoulders and hips stay elevated, causing pressure buildup. If your mattress is too soft, your hips may sink too far, throwing your spine out of alignment.
The goal is finding the balance between comfort and support.
For side sleepers especially, the mattress should allow the shoulder and hip to sink in just enough so that the spine remains relatively straight from the neck down to the lower back.
A Simple Test
Imagine drawing a straight line from the base of your neck to your tailbone. When you're standing, that line is naturally aligned.
When you're lying on your side, your mattress should help maintain a similar alignment. If your shoulder can't sink in, your upper body is pushed upward. If your hip can't sink in, your lower body is pushed upward. Both situations create pressure and can force your spine into an unnatural position.
Over time, that can contribute to discomfort not only in the shoulders and hips but also in the lower back.
My Experience in the Mattress Industry
After helping thousands of customers choose mattresses over the years, I've found that shoulder and hip pain are among the most common complaints from side sleepers.
Many people believe they need a firmer mattress because they've heard that firm mattresses are better for their backs. But once they move to a mattress that provides better pressure relief while still maintaining proper support, they often notice a dramatic reduction in pain and stiffness.
The key isn't finding the firmest mattress. The key is finding the mattress that allows your body to sink in where it needs to while still keeping your spine properly aligned.
Final Thoughts
The good news is, you might not just be getting old. If you regularly wake up with sore shoulders or aching hips, don't assume it's simply part of getting older. Think back to the hard-floor example.
A mattress that's too firm may be creating the same pressure-point problems night after night. The best mattress isn't the firmest mattress. It's the one that balances pressure relief and support so you can sleep comfortably, stay aligned, and wake up feeling refreshed.
Don't worry, Sleep Happy.
Professor Goodsleep
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