It refers to the body healing old injuries, one at a time (perhaps more), as they occurred but in a backwards sequence. The way it works is that as the body becomes stable through chiropractic adjustments, it also becomes able to heal not only the recent damage but also old injuries. Sometimes the injuries are healed in order of importance or in order of the most recent injury. It all depends upon what your innate intelligence prioritizes.
The way one may experience this is by unexpectedly feeling that one is getting “worse” or that aches and pains that have not been felt for awhile are coming back and you’ve done nothing to exacerbate them. Sometimes you may think you are imagining what you’re feeling or that perhaps the concept of retracing is just wishful thinking. Not so. Many have experienced retracing, I for one have. If you think about it, it makes sense. This ability/principle provides the body with an infinite capacity to heal!
How awesome is that? Innate intelligence amazes us once again!
Retracing; what a concept! (image source)