 And that's just with respect to the spine, I mean, and the facet joints and the discs. What about the muscles and the tendons and the ligaments that are all interacting and holding everything together and providing the strength for you to be able to do things? When these items, when these injuries or when these mechanisms within your body go away, you've got to have some idea of what it's going to take to get them better or if you're ever going to get better.