Muscles that aren't exercised regularly tend to become weak. Recent research indicates that brain cells are similar to muscles in this regard. Memory and brain fitness improve with stimulating brain exercises for all important areas of the brain. Crosswords alone are not enough because they don't exercise all parts of the brain. Brain exercise needs to include activities like drawing and learning a musical instrument.
Karoline Lawrence sent me this link. She was a student in my four-week class at Alexian Institute in 2003. She attended my presentation at Washington Park on March 14, 2005 along with two friends - Caroline and Hazel.