Physical Activity Keeps the Brain from Shrinking?

Researchers used MRI scans to collect data on the brain size of more than 1,550 seniors and found that the average brain size of the most active participants was 883 cubic centimeters, compared to only 871 cubic centimeters among those leading more sedentary lives. The researchers note that this difference is equivalent to nearly four years of brain aging. American Academy of Neurology, April 2020