I had a sore back pop up so I went to a local chiropractic office to get advice on not having back troubles.. The practitioner I saw remembered seeing me years back, maybe ten. As soon as she came into the room, she asked me if I remembered her from back then. I did. I explained I had a sore back the other day but had not had it when I woke up. I said I was there for advice.
She advised me to stretch before going to sleep and when I woke up. The stretches she demonstrated were somewhat like the child's pose.
The soreness, sometimes rather severe that I felt, feels related to not using my back muscles all night. I think as I age that I develop soreness more easily than when I was young. No one has advised me to develop the habit of stretching appropriately before and after sleeping and I am eager to see what advantages and improvements I can find.