I just sleptf four (4) hours and haven't adjusted yet with DST and my back aches so much. I have this whenever I worked 3-5 consecutive days but this week I got a 3 days off. I thought it's the sign of aging and lack of exercise but I realized that we have a 7 years old mattress and maybe it's time to replace it. I read about boston mattress stores and they have affordable good mattresses. I need to put this on our to-do-list and discuss it with hubby so we could plan ahead and save for it. I can picture my son jumping up and down on it and wouldn't sleep on his bedroom. I'm excited to have a new one and imagining myself having a good night sleep.