The feeling and movement. The human nervous system starts with the brain, which controls everything, then the spinal cord and nerves, then the muscles that move, and any problem at any point in this track, no matter how simple, is capable of causing a problem or failure in movement. The episode briefly explains neuroscience and the simple ideas in it, and deals with multiple sclerosis, the most common neurological disease that is currently increasing in prevalence among young adults.
