The primary protectors of your central nervous system are the skull, twenty four vertebrae and the pelvis. In between each of these spinal segments is a pair of spinal nerves that bring messages from the brain to the individual parts of the body. Different segments are responsible for the transmission of messages to different parts of the body. The general rule of thumb is that the higher segments communicate with the upper portion of the body, while the lower segments communicate with the lower portion of the body.
The way the body works is complex yet simple. A message begins in the brain, travels down the spinal cord to a specific spinal nerve, which then initiates a particular action within. Then, when the process is complete, a message travels back through that nerve, up the spinal cord and into the brain, and communicates whether or not that action was completely successfully.
But what happens if that communication is impeded in some way by bad posture?
The simple analogy of the safety pin may help you internalize the relationship between the spine and overall health. When the body is functioning correctly, there is reciprocal communication between the brain and every cell, tissue and organ in the body. Both paths are uninterrupted, just like a closed safety pin. Problems arise when there is a disruption in either of these communication paths. In this case, the safety pin is open, and the body slips into a state of disease, where it is no longer functioning optimally.