Much like side sleepers, back sleepers need a mattress that is firm on the inside and plush on the top. When you sleep on your back, your buttocks and center of your back take most of the pressure of the weight of your body. A pillowtop or plush mattress will contour to those curves of your body and work to relieve any potential pressure points so you don't toss and turn.

A firm mattress, with a firmer padding on top doesn't allow the mattress to absorb those curves and creates pressure points that restrict your blood flow and trigger your subconscious to make you toss and turn.