Our mattressis getting old and I was just diagnosed with bulging discs. Bed rest is not a restful experience at all. I found myself tossing and turning a lot and in more pain as the days went. I ordered the thickest memory foam I found on Wayfair's site.  I do still wake with pain occasionally due to the injury or a demanding PT session. Though since using it I am able to sleep most nights for 6 to 8 hours. I no longer wake with added pains from an awkward position.