True, chronic back pain may not, and probably isn’t, due to a bad mattress. What is likely causing it is weak core and back muscles. Even if you’ve had spinal problems, they can be relieved by strengthening the muscles that support your spine, neck, and head. Rather than thinking only of your bones as your body’s support system, remember that it is the muscles that provide the most support.
Exercise doesn’t have to be strenous or breath arresting to be effective. There are simple, controlled, relaxing exercises you can do to build up your core muscles (like those in your abdomen) so that you have a greater balance of support. That, in conjunction with healthy and strong back muscles will help you relieve your back pain and give you support to fix the problem. Learn these exercises at the link below.