My father-in-law gave us a foam mattress almost two weeks ago. I wasn't sure if it would make our very old bed any better. Amazingly, it actually has made our bed better. Not only is it softer, but it also absorbs all the random movement in the night. Now I don't wake up when my husband tosses and turns. I had heard that it would make the bed warmer (which would have driven my husband crazy) but it doesn't seem to be a problem for us. I'm really surprised at how much it has changed our sleep.