The more physically active you are at age 25, the better your thinking tends to be when you reach middle age, according to a large-scale new study. Encouragingly, the findings also suggest that if you negligently neglected to exercise when young, you can start now and still improve the health of your brain.
Those of us past age 40 are generally familiar with those first glimmerings of forgetfulness and muddled thinking. We cant easily recall peoples names, certain words, or where we left the car keys. Its what we scientists call having a C.R.S. problem, said David R. Jacobs, a professor of public health at the University of Minnesota in Minneapolis and a co-author of the new study. You cant remember stuff.