Lower back (Lumbar spine) pain is very common and can be very scary.  Issues with your lower back can greatly affect your ability to function and can even change the way all of your abdominal muscles work.  Often lower back pain can exist because it isn’t in the right alignment (because of poor posture, because of sitting too much throughout the day, etc.); although it can also be due to things like disc injuries (the shock absorbing pads) or spondylolisthesis (one vertebra slipping forwards on another) or even arthritis. No matter what is going on it is best to get on top of it in order to prevent ongoing pain and problems.