Brain-Fit Is A Recent Phenomenon.
HOGWASH!
American humorist, satirist, social critic, lecturer and
novelist, Mark Twain, was a pioneer in brain-fit exercises. Twain was aware of memory loss associated
with old age and "kept up his powers of recollection against the dimming
effects of time." Twain was so determined to keep his brain fit that in
1885, he designed a board game called "Memory Builder." http://twain.lib.virginia.edu/timeline/