Is Stair Climbing good for cardiovascular health?

The evidence points that way, though it's not yet conclusive. Stair climbing has been studied as a specific, everyday form of vigorous physical activity across several independent cohorts spanning different countries, with a consistent, though modest and largely observational, direction of benefit. That's reflected in an evidence score of 48/100 for its role in cardiovascular health, drawn from 7 studies, with an estimated impact on longevity rated moderate (42/100).