Instead of throwing out old sagging mattress, is it possible to put some extra padding under the mattress to prop it up?
I have slept fine for two years on a two-year old twin mattress. For some reason I now wake up with a sore back. I'm thinking maybe the mattress has sagged
So I put extra pillow under the center of the mattress but that doesn't help.
The only things that help are to wear a compression back support belt to sleep, and to wake up often and move around a little, change position, then go back to sleep.
Most people would throw away the old mattress and buy a new expensive temper pedic mattress. I'm under the conviction that whatever a temper pedic mattress can offer, I should be able to get close by adding pillows under or on the mattress.
The problem is experimenting with sleeping position takes a long time. Is it possible to look at my sleeping position (perhaps using a second observer) and predict whether or not I would get back pain? This would allow me to adjust my bed or to buy a new bed.