Back pain is one of the most common medical complaints, affecting 8 out of 10 people at some point. Back pain can range from a dull, constant ache to a sudden, sharp pain. Most back pain goes away on its own, though it may take awhile. Taking over-the-counter pain relievers can help; staying in bed can make it worse. The best treatment, of course, is prevention.
Although a nice soft mattress may feel wonderful at first, most experts agree that a moderately-firm mattress provides the best support for your back. Mattresses should generally be replaced after 5-7 years. People over 40 and those with degenerative back conditions get the most value out of mattress replacement.