Most people say that you should replace your mattress every 5 to 7 years. That seems excessive to me. However, my old mattress literally made me hurt all over. I could feel the springs -- the LH started to call me the Princess who imagined a pea. He thought he was so clever. However, the kids agreed with me -- the springs were indeed popping through.
Now I need to figure out how to dispose of the old mattress... In a green way, of course.
* I understand I slept VERY soundly last night. So much so, that I snored. Lots.