I am a 57 year old female. In pretty good shape, exercise three times a week in a gym, golf twice a week, walk, etc. approximately six months ago, i noticed my lower back pops, quite easily. Every night as i stretch out in bed, i pop my back , seems to relieve pressure. This lower back popping seems to be happening more frequently through out the day. I can easily pop my back by stretching either standing or laying on floor. I do feel relief and do not have major back pain, it is a very low grade pain, maybe a two on a scale of one to ten. It just seems to need popping more and more frequently and is quite easy to do myself. Even sitting on the couch with very slight movements. Could this be a symptom of something serious?