Everyone knows that you are supposed to replace your mattress every few years. However, how many years is that? Well, they say that you should replace your mattress every ten years. By that time, the mattress is pretty worn out and could be affecting the way you sleep at night. After all, in ten years, you will have spent at least 29,000 hours sleeping on your bed! Keep in mind, the older you get, the sooner you should replace your mattress. In fact, they say that you may want to think about replacing your mattress every five years if you have back pains all the time. A worn out mattress puts a lot of pressure on certain points of the body. Normally, we sleep in about the same spot of the bed every night. Thus, that spot gets worn down, and it leaves us with a pretty rough night of sleep. It's something that you do not have to put up with, and you can fix it with a new mattress.