How you sleep
The way you sleep and the condition of your bed or mattress can also impact your back. It is best to inspect your mattress to make sure it is in good shape and not too old. While you sleep, the mattress should be firm and support your body. Although it shouldn’t sink you in when you lie down, the mattress should conform to the curve of your body. When you lay down, there should be no air between the mattress and your body. When you wake up in the morning, pay attention to how your upper back feels. If you frequently wake up in agony, it may be time for a new bed.