Exercise Protects Aging Brains Physical Activity Trumps Mental Activity, Study Suggests Oct. 22, 2012 -- Staying mentally sharp as you age may have more to do with working out than working on crossword puzzles, new research suggests.
ONE lesson I've learned while writing about fitness is that few things impinge on an active life as much as writing about fitness - all that time spent hunched before a computer or puzzling over scientific journals, the countless hours of feckless, seated procrastination. While writing about the benefits of exercise, my muscles slackened.