I have a non-technical mattress question... why can't I get a mattress that doesn't give me terrible body impressions!?!? I've gone through several in my adult life. Once they start sagging it gives me terrible back troubles. Drives me crazy this can't be solved.
When you're shopping for a foam mattress, be sure you are getting something that has a higher density foam. I'd recommend something above 1.8 lbs. When looking for memory foam you'll want something even more dense like 4+ lbs.
For body impression, unfortunately most mattresses will do this over time. This is even more prevalent with natural options such as cotton or wool. You may want to consider replacing your mattress more frequently and using a mattress protector that will keep body moisture (sweat, etc) from being absorbed into the core.
