Both my wife and I have low back issues which have been eased significantly by our Tempur- ProBreeze Queen mattress. With any mattress there is a short period of adaptation by ones own body to the new unit and this is no exception. It only took a week for our bodies to adapt and since it has been fantastic. The support we get from the ProBreeze and the cooling cover has made it so we both get the best sleep we have gotten in decades. We dont wake up stiff anymore. This is a medium firm mattress so you dont sink into it but feel a gentle support for your entire body. We love it!