I spent three weeks on a sleep number bed in the Ronald McDonald house in Seattle while my grandson was there for followup treatment. I finally found the number that was okay for me in the end of the second week, my grandson decided to wittle granny down to zero after I fell asleep..I was too stiff and sore to climb out of the "box" in the morning. Good thing I love him alot, or I would have walloped him good that morning. I hate the sleep number bed! Love my med-firm pillowtop most nights.