Some people can drop a task midstream, respond to a curveball, and then slide back into deep focus with barely a hitch.

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Habits can feel mysterious, arriving almost overnight or refusing to stick despite weeks of effort. New work on a “hidden switch” in the brain suggests those differences are not just about willpower, ...

Brain preserved in formaldehyde. — Gaetan Lee (CC BY 2.0) Brain preserved in formaldehyde. — Gaetan Lee (CC BY 2.0) Scientists have discovered a brain “pain switch” that prioritises survival needs ...