[Minimac]

In this World there seems to be an opposite for everything, now for this instance, I'm referering neurogenerative diseases. Some research I've seen seems to suggest, that if you aren't suffering from any neurodegenerative diseases, you can reverse the damage done by concussion through a healthy lifestyle by especially regular exercise, since it should stimulate this reversible regeneration in a lot of ways. Does this have some truth to it? That it's never too late if you aren't suffering from this? It's based off the fact, that if suffering from an illness, the brain won't be able to heal quick enough to cause a reversible effect, but otherwise it most likely will be capable of doing it. But then I ask, why is it some people won't regain all of their functions from one concussion, and even though they aren't suffering from any specific disease? Is it because they've been sufferers of multiple concussion syndrome, which in a way counts as an illness in itself? Or can it be because the severity of the concussion also caused chronic degeneration?