The foam roller is an instrument used to increase mobility and improve your soft tissue quality. When it comes to the benefits of foam rolling, there is a big difference between the thoracic spine and lumber spine. You should never foam roll your lower back (lumbar spine). I’m going to tell you exactly what to focus on instead if you are attempting to loosen up a stiff lower back.
Over 80% of the population will experience low back pain at some point in their lives. Many will develop chronic low back pain which is back pain that persists for over 90 days. Some will develop low back pain that goes away…but then it returns and becomes worse. Just about every case is unique and should be treated as such.