A conversation where you already know where it's going asks nothing of the brain. One where you're slightly lost and paying attention takes effort, and attention looks like the switch that lets the brain rewire: in rats, a tone reshaped the hearing cortex only when the brain's attention chemistry was fired alongside it. Animal work, not human. Evidence: decent
Nobody has trialled "talk to a plumber about plumbing" as a brain exercise. It also happens to be how you make a friend. Evidence: worth trying
The rule is simple: your job in the conversation is to understand, not to reply.
Same theme: Keeping the brain plastic
Keeping the brain plastic
Assume you can get better at it
When you're bad at something, treat it as "not yet" rather than "not me".
no timeEvidence: worth trying
Keeping the brain plastic
Delete the brain-training app
If the goal is a sharper head, swap the app time for a real skill. The app makes you better at the app.
no timeEvidence: solid
Keeping the brain plastic
Do it the annoying way, once a week
Pick one thing you do on autopilot and do it the harder, unfamiliar way. New route, other hand, recipe from scratch, no calculator.
10 minEvidence: worth trying