I just read a fascinating news article which states that a new study shows that keeping your mind active may help ward off Alzheimer's disease. I'm sure nobody had ever thought of that before. (If they had, they might not have gotten Alzheimer's so quick, huh?)
This is why I'm trying to learn the last movement of the Barber concerto. Gotta get a head start. Although by the time I can actually play it, senility may have set in. Who will win--Barber or Alzheimer?