This Metric Is a Huge Predictor of Race-Day Performance—And Most Runners Completely Overlook It

It’s all about improving your efficiency.
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This Is How Long and Fast Men and Women Should Be Able to Run

For many people, regular jogging is part of their routine. Sure: running is healthy and clears your head! But how fast should you be, what distance should you cover, and how long should you run to be ...