If you do not sleep very well, or feel exhausted after a long nights sleep, then perhaps the culprit is your mattress. It can be too hard, too soft or generally unsupportive of your body. How can a mattress really be designed for you if you weren’t involved in the creation process?
One type of mattress that actually accounts for your body size, shape and weight is a memory mattress. It is not build with springs, but memory foam. It adjusts to your shape and gently caresses you with it’s visco elastic memory foam material. Anyone who sleeps on them generally reports a good experience.