The Science of Running
Running a marathon can be a grueling effort, even for well-trained athletes. Runners can suffer electrolyte imbalances and even kidney problems. An important factor in all this is hydration. But how much and what should runners drink? Those are questions doctors at Mayo Clinic want to answer. They're studying the effects running has on the human body in hopes of being able to tell runners and other endurance athletes how best to prepare for an event.