There is considerable nervous system involvement in safe exercise. I wonder if playing a twitchy video game would have similar cognitive effects. If hand-eye

There is considerable nervous system involvement in safe exercise. I wonder if playing a twitchy video game would have similar cognitive effects. If hand-eye coordination can improve in teens, I don't see why it can't improve in dementia patients and improved coordination might mask some symptoms. The assumption is exercise results in higher blood flow which does "something". I know its easier to concentrate when you have practice concentrating, and for many boring people, exercise might be their only daily experience with concentrating, aside from the rare occasional dementia testing. Possibly forcing concentration on a regular basis (via exercise, or whatever alternative) results in better cognitive test results. I suppose a lot depends on defining exercise as staring at a TV while walking on a treadmill vs playing racquetball.