Water, Salt, and Sugar: The Science of Hydration in the Backcountry

When we’re hiking or exercising for hours, especially in hot conditions, staying hydrated seems simple: drink water. But the physiology of hydration is much more interesting than that. In this episode, we’ll look at what actually happens after you take a drink—how your intestines absorb water, why sodium is important, and why a small amount of carbohydrate can dramatically influence the absorption of both sodium and water. We’ll also discuss practical hydration strategies for hikers, runners,...