Fast walkers in their 80s cut their risk of cognitive decline by half, a study finds

Crossword puzzles and brain teasers have long been touted as ways to keep the mind sharp. But a new study points to another strategy that may matter just as much: staying fast on your feet.

Researchers have found that people in their 80s who maintain an exceptionally quick walking pace, dubbed "super movers," are also far more likely to stay mentally sharp compared to their slower-moving peers of the same age.