I have noticed that if your core group of muscles around your stomach and lower back begin to atrophy, then your skeletal structure begins to “sit down on”, or impinge on its own joints, rather than being “suspended” as it were, within a network of muscles which are much better able to support and manipulate the weight of our body. Lower back pain is the first sign of this.

You are absolutely right - regular exercise is the ONLY fix for this!