“Doc, I work out every day. Why does my spine have degeneration?”  To answer this question, let’s look at the two types of muscle fibers in our musculoskeletal system-  fast twitch and slow twitch.  The muscles that bulge when we flex are the fast twitch.  Most muscles involved with “pumping iron” are fast twitch.  The slow twitch muscles are the deeper muscles, and they are not involved in a regular anaerobic work out.  These slow twitch muscles are responsible for the intersegmental symmetry of our musculoskeletal system and our posture.  Read more...