We all know that exercise builds muscles, but newly released scientific research indicates that it may also build the brain – literally! A team at the University of Edinburgh followed more than 600 people who were 70 years old at the time the study began. The subjects provided details on their daily physical, mental and social activities.
Three years later, using imaging scans, the scientists found that the subjects who engaged in the most physical exercise had less shrinkage and damage in the brain’s white matter – the “wiring” of the brain’s communication system. The relationship remained even after factoring for such variables as age, health, social class and I.Q.