The human body is amazing, it tries to keep all parts operating optimally. If one particular part is stretched to its limit the body will try to compensate in preparation for the future.
I have no real evidence from this other than observing people that go to the gym. What I mean is someone who goes to the gym and stretches their arms to the limit for example by lifting heavy weights will generally see an increase in the size of their arms the more they do it. I am starting to think that the same may be true of the brain, the more you use it the better it gets.
I take this one step further by saying that because I work a very sedentary job I have to exercise my muscles outside of work, and when I was a youngster working in a factory I used to have to exercise my brain outside of work by learning languages e.t.c.
I think this is a good practice and think that maybe not enough people do this kind of exercise, just a thought.
