I don't have any references to hand, but drawing from both personal experience and anecdotal stories from places like r/nootropics, the link between cognitive performance and physical exercise is already well established and almost universally accepted. In comparison, brain training games and sudoku puzzles are rarely, if ever, mentioned as beneficial (again, anecdotally). Am I misunderstanding what's being speculated here?
Somewhat related - something that I do find quite curious from my own personal experience is that lifting heavy weights has a far greater impact on my ability to concentrate (and therefore perceived cognitive ability, I guess) than cardio/aerobic exercise does. Like night and day. I've recently started attributing it to creatine supplementation, but I do wonder if there's anything more to it than that.
Somewhat related - something that I do find quite curious from my own personal experience is that lifting heavy weights has a far greater impact on my ability to concentrate (and therefore perceived cognitive ability, I guess) than cardio/aerobic exercise does. Like night and day. I've recently started attributing it to creatine supplementation, but I do wonder if there's anything more to it than that.