I found walking definitely helped my back. It is hard to get started. Who wants to rise in the morning and start their day thinking, "yup. Gotta get my walk in.?" Not many I know unless you're trying out for the Olympics and doing a workout like Katy Ledecky, 4:30 a.m. and swimming every day!! Will power. Mental stuff. Not race car driver.
I know as much as I hate to make myself walk I really feel better and full of p & v once it is done. Takes awhile though.
Living in Raleigh in a section of the city that had wide sidewalks and low traffic save for Leesville Road, it was a quiet time and good chance to meet the neighborhood dogs as their owners were out walking them. I walked five miles a day back then. No more. Today, there, walking with a buddy.
Anyway, start walking and keep at it. It actually gets to the point your conscience squirts on your brain to remind you it is time and failure to take that walk causes great internal and mental stress and abuse from your conscience will be of a greater nature than if you do get up and walk to help your back. Good shoes are a must though.
For the first time in my life time, that's on the downside of 87, I found shoes that fit and feel like they are a part of my feet. I spent my working days on concrete and never had shoes for like the ones I have now and do they ever make a difference. Anyway, good shoes!! Remember that. Good Shoes.
Best thing is, they are fully made in the good ole U.S. of A.