A new analysis of nearly half a million adults finds that everyday stair climbing is tied to a big drop in heart disease deaths — good news for anyone who has no time for the gym.

• Pooled data from nine studies links stair climbing to a 39% lower risk of dying from heart problems and a 24% lower risk of dying from any cause.
• The lowest risk group climbed about six floors a day, roughly 60 steps.
• More is not automatically better — people who do not exercise now should build up slowly instead of chasing a step target.
• The easy version: take the stairs instead of the elevator, and split the climbing into short bursts through the day.
• Cardiologist Kaustubh Dabhadkar put it bluntly — a pill that cut heart risk by a third would have people lining up, but nobody lines up for the stairs.

Outlook: Expect stair climbing to keep gaining traction as a free, low-effort heart health habit, though the findings show a link rather than proof of cause.