The Hydration Mistake Every Summer Runner Makes: What a Marathon Coach Revealed

The Hydration Mistake Every Summer Runner Makes: What a Marathon Coach Revealed

For years, you’ve grabbed a glass of water before heading out for your summer run—but a marathon coach reveals this common ritual is costing you performance. The secret isn’t drinking more water; it’s understanding when, what, and how much to hydrate. Learn the one change that transforms your summer running.