Tiny bursts, big health gains: the science of exercise snacks

A British Journal of Sports Medicine meta-analysis and related trials show that 'exercise snacks'—brief bursts of vigorous activity spread across the day—significantly improve cardiorespiratory fitness and can lower all-cause and cardiovascular mortality risk, with benefits seen in just a few minutes daily through activities like stair climbs, brisk walking, and simple bodyweight moves, even for previously sedentary individuals.