Even these gnomes are smart enough to get their daily constitutional!
Walking for a heftier hippocampus....A new study on adults 55+ showed that regular aerobic activity—in this case, walking around a track three times a week for 40 minutes—increased the size of the hippocampus, a brain structure associated with memory and reasoning. They did better on memory tests, too. The adults who participated in the study were recovering couch potatoes, suggesting that it's never too late to gain brain benefits from exercise. The full article is here.