Resting and sleeping are vital functions of the human body. In order to be at your best you need several hours of sleep a day. Now it is true that the number of hours vary for each individual. But one thing is definite: if you are sleeping on a hard, lumpy mattress then you probably spend most of the night tossing and turning. Having the right mattress is absolutely essential. A bad mattress can lead to numerous physical conditions that make it nearly impossible to get the rest you need. …