Hyponatremia

Here are nine common signals you should pay attention to and what they mean when you experience them.

Hydration during running is not as complicated as you may have been led to believe.

We examine what might be worse than dehydration — over-hydration.

A recent study suggests only drinking when thirsty.

For ill-prepared runners, they can even be downright deadly.

Research shows that over-hydration can actually slow you down.

Runners drink enough when they drink by feel.