Your low back, or "lumbar spine," is made up of five bones that are stacked on top of each other and divided by a shock-absorbing disc. Your low back's muscles and ligaments provide a great deal of support. "Sprains" and "strains" are caused by these tissues being stretched too far or too hard, similar to how a rope frays when stretched beyond its natural capacity.
A "sprain" is when the thick, strong ligaments that hold your bones are damaged, but a "strain" is when the muscles or tendons that move your trunk are partially ruptured.
When it comes to looking for ways to reduce pain and tightness in your back massage therapy is one of the best routes you can take. Massage therapy aims to reduce tightness and pain in the muscles as well as improve overall functionality.