My mattress, which is about 10 years old, was beginning to show some small signs of its age. It was still relatively comfortable, but if I tried to sleep more than 8 hours I started to get some slight side pain (I sleep on my side). Looking at all the good reviews from this memory foam mattress, I decided to try it. Well, I think I now have a new problem now - I sleep almost too much, I don't want to get out of bed. Its almost too comfortable! My sleep has never been sounder and longer lasting than since I bought this mattress. My biggest problem now is trying not too sleep too much!