tossing and turning, then it is safe to assume that the sleep surface you have is in need of replacement. not being able to get the quality sleep you deserve can lead to a number of different issues.
the next thing to consider when trying to decide if you need a new sleep surface is whether or not the sleep you are getting is healthy. if you are waking up feeling like you have been hit by a truck, then it may be time for a new sleep surface. as a sleep surface begins to age, you will start to notice that you are not getting the support you once did. 