::Menu » Homepage » True Back » Back Cycler » Back Revolution » Contact » Supporters » Links: » Nokia Ringtones » Nokia Faceplates » Sextoys » Plus Size Lingerie » Free Nokia Ringtones Back pain occurs and is perpetuates through a neurological process: Specific nerve fibers know as Ad and C, or "capsaicin sensitive" or "pain nerves" are activated. Their activation of these nerves causes pain, inflammation, and muscle contracture. A vicious circle is initiated because inflammation and muscle contracture maintain the activation of the pain nerves. Research studies reveal that if activation of Ad-C fibers persists over a period of time, other biochemical processes are initiated that could perpetuate their activation indefinitely. In this occurs, pain will persist even though its initial cause has disappeared.