I'm a certified sleep science coach who has tested over 50 mattresses. An extra-firm mattress can be comfortable, but not all of them deliver on that promise. As a professional mattress tester, I've ...

If you’re ready to purchase a new bed, check out our guide to the best mattresses of 2024. Firmness is one of the most misunderstood aspects of mattress shopping, yet it's one of the most important ...