Running economy is one of the most powerful, and often misunderstood, determinants of endurance performance. It describes the amount of oxygen your body requires to sustain a given running speed. It helps explain why some runners are consistently faster and fatigue later than others, even when traditional fitness markers appear similar. Two athletes may share the same VO₂ max, yet the runner who moves more efficiently will cover more distance at the same physiological cost. Improving running economy, therefore, is not just about fitness, but also about how effectively your body converts energy into forward motion.
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