Finding the perfect mattress firmness can be tricky, but it’s key to getting a restful night’s sleep. The right firmness level helps keep your spine aligned, relieves pressure points, and ensures you wake up feeling refreshed. But what if your mattress feels too soft or too firm? Learning how to make a mattress firmer could be the solution you need.

A firm mattress can be especially beneficial for back sleepers or anyone who needs a firm mattress for better spinal support. However, it’s important to pay attention to how your body feels. If you’re waking up sore or stiff, there may be signs a firm mattress is hurting your back rather than helping it.

Understanding your body’s needs and adjusting your mattress accordingly can make a huge difference in your sleep quality and overall health. Finding the right balance is the key to waking up pain-free and well-rested.

Key Takeaways

  • Sleeping Position Matters: Side sleepers often benefit from softer mattresses that cushion the shoulders and hips, while back and stomach sleepers typically require firmer surfaces for proper spinal alignment
  • Body Weight Considerations: Heavier individuals may find that firmer mattresses provide necessary support without excessive sinking, whereas lighter individuals might prefer softer options for adequate pressure relief.
  • Balance Between Comfort and Support: Medium-firm mattresses often offer a compromise, providing sufficient support to maintain spinal alignment while still offering comfort, making them suitable for a variety of sleepers.
  • Health Implications: An overly firm mattress can exacerbate back pain for some individuals, indicating the importance of selecting a firmness level that aligns with your specific health needs.
  • Personal Preference is Key: Ultimately, the ideal mattress firmness is subjective and should be chosen based on what feels most comfortable and supportive to you.
how firm should my mattress be
AUTHOR

Mattress Advisory

CATEGORY

Mattress Education

POSTED ON

April 2, 2025

Why Mattress Firmness Matters

The firmness of your mattress plays a big role in how well your body is supported while you sleep. If your mattress is too soft, your body might sink too much, leading to poor spinal alignment and discomfort. On the other hand, a mattress that’s too firm can create pressure points, making it harder to relax and fall asleep comfortably.

Finding the right balance is key to a good night’s sleep. A firm mattress is good for maintaining proper spinal alignment and evenly distributing your body weight, which helps reduce pressure on your hips, shoulders, and back. It can also help prevent that “sinking” feeling that some softer mattresses create.

Plus, the right firmness level minimizes motion transfer, so you and your partner can sleep peacefully without disturbing each other. Understanding your body’s needs and adjusting your mattress firmness accordingly can make all the difference in how well you sleep.

How Do I Know What Firmness of Mattress I Need?

Choosing the right firmness depends on your sleeping position, body weight, and personal comfort preferences:

  • Side sleepers – Medium-soft to medium-firm is ideal to cushion shoulders and hips.
  • Back sleepers – Medium-firm to firm provides enough support for the lower back.
  • Stomach sleepers – Firm mattresses prevent the midsection from sinking, keeping the spine aligned.

Your body weight also matters. Heavier individuals may need a firmer mattress for better support, while lighter sleepers often prefer softer options for more cushioning.

How to Choose Mattress Firmness

  1. Test it out – If possible, try different mattresses in-store.
  2. Consider your sleeping position – Side sleepers need more cushioning; back and stomach sleepers need more support.
  3. Pay attention to body weight – Heavier sleepers need firmer mattresses to prevent sagging.
  4. Check for pressure points – Your mattress should relieve pressure, not create it.

Memory foam, latex, and hybrid mattresses all offer different firmness options—understanding these materials can help you make a better choice.

How to Tell If Mattress Is Too Soft or Firm

Signs Your Mattress Is Too Soft:

  • You sink too deeply into the mattress.
  • Your lower back feels unsupported.
  • You wake up with back or joint pain.

Signs Your Mattress Is Too Firm:

  • You feel pressure on your hips, shoulders, or back.
  • Your arms or legs go numb while sleeping.
  • You wake up feeling stiff or sore.

Understanding the difference between a firm and plush mattress can help you decide which one suits you best. A firm mattress provides more support and keeps your spine aligned, making it a good choice for back and stomach sleepers. A plush mattress, on the other hand, offers more cushioning and conforms to your body’s shape, which can be ideal for side sleepers or those who prefer a softer feel.

If you find your memory foam mattress is too soft, there are ways to firm up a memory foam mattress. Adding a firm mattress topper, placing a plywood board under the mattress, or adjusting the bed’s foundation can all help increase firmness and improve support. Knowing how to adjust your mattress to your body’s needs can make a big difference in sleep quality and overall comfort.

How to Make a Mattress More Comfortable

If your mattress feels too soft or too firm, you can adjust it for better comfort:

  • Add a mattress topper – A memory foam or latex topper can adjust the feel of your mattress.
  • Rotate your mattress – Flipping or rotating your mattress helps even out wear and maintain support.
  • Use supportive bedding – A mattress pad or extra pillows can provide targeted comfort and pressure relief.

Sometimes, even a firm mattress can feel uncomfortable over time. If you’re wondering how to make a firm mattress softer, adding a plush mattress topper or using a thicker mattress pad can help create a more cushioned feel without sacrificing support.

how firm should my mattress be

How Firm Should a Mattress Be for Back Pain?

If you struggle with back pain, finding the right mattress firmness can make a big difference. Most experts recommend a medium-firm mattress because it provides a balance of support and cushioning that helps keep your spine aligned.

A mattress that’s too soft may cause your body to sink, which can throw off spinal alignment and worsen back pain. On the other hand, a mattress that’s too firm can create pressure points, making it harder to relax and sleep comfortably.

Memory foam and hybrid mattresses are often ideal for back pain relief since they contour to your body’s shape while still offering enough support to prevent sagging. A medium-firm mattress helps distribute your body weight evenly, reducing stress on your back and hips. Finding that perfect balance of comfort and support is key to waking up pain-free and feeling refreshed. The right mattress can truly improve your sleep and overall well-being.

How to Test Mattress Firmness in a Store

  • Lie on the mattress – Spend at least 10 minutes in your preferred sleeping position to see how it feels.
  • Pay attention to pressure points and support – Make sure your hips, shoulders, and back are properly cushioned and supported.
  • Check for motion isolation – If you sleep with a partner, notice how much movement you can feel when they shift positions.
  • Ask about return policies – Some stores offer trial periods, allowing you to test the mattress at home and return it if it’s not right.

Understanding the difference between a firm and plush mattress can help you make a more informed decision. A firm mattress provides more support and keeps your spine aligned, making it ideal for back and stomach sleepers, while a plush mattress offers more cushioning, which can be better for side sleepers.

If you’re wondering where to buy a firm mattress, check with reputable mattress retailers or online stores that offer customer reviews and trial periods. Taking the time to test and compare different options will help you find the best match for your sleep needs.

What Is the Firmness Scale for Mattresses?

A firm mattress can feel even harder if it’s on the wrong type of base.

  • Slatted bed frames with wide gaps can make a mattress feel firmer.
  • Try placing a piece of plywood or a mattress board underneath to create a more stable base.
  • If possible, switch to a platform bed or a box spring for better support and softness.

An uneven or unsupportive base can make even a soft mattress feel too hard.

how firm should my mattress be

How to Maintain Mattress Firmness Over Time

  • Use a mattress protector – Protects against moisture and dirt that can degrade the mattress.
  • Rotate your mattress regularly – Every 3 to 6 months to prevent sagging.
  • Keep it supported – Ensure your mattress has a solid foundation or bed frame.
  • Avoid jumping on the bed – This can break down the mattress structure over time.

Final Thoughts

Choosing the right mattress firmness is essential for good sleep and overall health. Everyone’s body is different, so what works for one person might not work for another. Testing mattresses in person, understanding your sleep position, and considering your body’s specific needs will help you make a more confident decision. A well-chosen mattress can lead to better sleep, less pain, and improved well-being.wake up feeling refreshed every morning.

Frequently Asked Questions

To make a soft bedding set firmer, consider adding a mattress topper with higher density foam or a firm material.

Yes, you can increase the firmness of a mattress using several methods. Whether your mattress feels too soft due to age, material breakdown, or personal preference.

If your mattress isn’t firm enough, there are a few easy fixes. Adding a firm mattress topper made of latex or high-density foam can help. A 2-inch topper works best for extra support. Placing a plywood board under the mattress reduces sagging and adds stability. Adjusting the bed frame by adding more slats or switching to a solid base can also make a difference.

Using a mattress topper.

Yes. Using plywood under your mattress is a viable option, particularly if you have an older bed base or a slatted frame with wide gaps

Whether a firmer or softer mattress is better depends on your sleeping position, body type, and personal comfort preferences.

Yes, a mattress pad can make a bed firmer, but it depends on the type of pad you use.

A firm mattress can be better for your back — but it depends on your sleep position and body type.

For back and stomach sleepers, a firm mattress helps keep the spine properly aligned, which reduces strain on the back. It prevents your hips and lower back from sinking too much, which can lead to misalignment and discomfort.

To firm up a sagging mattress, try rotating it 180 degrees or flipping it if it’s double-sided. Placing a plywood board between the mattress and the bed frame can create a more stable surface and reduce sagging. 

Yes, a firm mattress can cause back pain if it’s too firm for your body type or sleep position. A mattress that’s too firm can create pressure points on the hips, shoulders, and lower back, preventing the spine from aligning properly.

Published On: April 2nd, 2025|Last Updated: April 2nd, 2025|Categories: Mattress Education|9.4 min read|Views: 50|

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