Running (sic!) bit long but finally got to talk about my walking and how it got me out of lower back pain problems. The amazing study I refer to you can find in this article. https://www.vox.com/science-and-health/2017/8/4/15929484/chronic-back-pain-treatment-mainstream-vs-alternative . It only looks TL;DR for those of you who never had any lower back problems. But believe me it's worth reading anyway.