When Olga Kotelko, a famous track-and-field athlete, was 93 she participated in a study to allow researchers to study her brain and the effects of exercise on the brain. Read this fascinating post from by Gretchen Reynolds from the New York Times Well Blog about the results of the study, which found that Olga's brain had more white matter, fewer abnormalities, and a larger hippocampus than others of her age.
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