What your walking speed may reveal about your brain health https://www.sfchronicle.com/health/aging-longevity/article/walk-fast-exercise-health-brain-22362728.php Older adults who walk fast are less likely than their slower-moving peers to develop cognitive decline later in life, according to a new study by aging researchers https://www.neurology.org/doi/abs/10.1212/WNL.0000000000214776