If your current mattress is not firm enough, a simple solution is to invest in a mattress topper. These are typically made from foam or fiberfill and can add an extra layer of cushioning to your mattress. Look for a topper that is specifically designed to add firmness to your mattress, and make sure to choose one that is the right size for your bed.1. Use a mattress topper
Over time, the materials in your mattress can start to compress and lose their firmness. To prevent this from happening, it's important to rotate your mattress regularly. This means flipping it over and rotating it 180 degrees every few months. This will help distribute your weight more evenly and prevent your mattress from developing sagging spots.2. Rotate your mattress regularly
If your current mattress is not providing enough support, it may be time to invest in a new one. Look for a mattress that is specifically designed to be firm, such as a memory foam or latex mattress. These types of mattresses are known for their ability to contour to your body while still providing the necessary support to keep your spine aligned.3. Invest in a firmer mattress
If you're not ready to invest in a new mattress just yet, consider adding a mattress pad to your current setup. These are thinner than mattress toppers and can add a little extra firmness to your bed. Look for a pad that is made from a firm material, such as latex or high-density foam, for the best results.4. Try a mattress pad
If you want a quick and inexpensive fix for a sagging mattress, try placing a plywood board between your mattress and box spring. The board will provide extra support and help prevent your mattress from sinking in the middle. Just make sure the board is the same size as your mattress and doesn't have any sharp edges that could damage your mattress.5. Use a plywood board
If you have a platform bed or a bed frame with slats, make sure they are providing adequate support for your mattress. If the slats are too far apart, your mattress will start to sag in between them. Consider adding a mattress support system, such as a foundation or bunkie board, to provide additional support and keep your mattress firm.6. Use a mattress support system
If you suffer from allergies or want to protect your mattress from spills and stains, consider using a mattress encasement. These are zippered covers that completely encase your mattress, providing an extra layer of protection. Look for a waterproof and hypoallergenic encasement to keep your mattress clean and firm.7. Use a mattress encasement
If you find that your mattress is too soft, a mattress wedge can help add extra support. These are triangular-shaped pillows that you place under your mattress to raise it up and provide more firmness. They can be especially helpful for those who suffer from acid reflux or other medical conditions that require an elevated sleeping position.8. Use a mattress wedge
If you want the flexibility to adjust the firmness of your mattress, consider investing in a mattress topper with adjustable firmness. These toppers have different levels of firmness on each side, allowing you to choose the level that best suits your needs. They are a great option for couples who have different preferences in terms of mattress firmness.9. Use a mattress topper with adjustable firmness
To add an extra layer of comfort and support to your mattress, consider using a mattress protector with extra padding. These are similar to mattress pads but have the added benefit of protecting your mattress from spills and stains. Look for a protector with a thick layer of padding to help make your mattress feel firmer.10. Use a mattress protector with extra padding