Dehydration

A 1942 army study revolutionized our understanding of the effects of heat and how to combat it.

Staying on top of your hydration in the heat and humidity can be tricky, so keep these key points in mind.

Uncover the truth about fueling for your endurance endeavors.

Don't let the heat of the dog days spoil your training. Use these tips to run safely and effectively all summer long.

The popular ergogenic aid might not be the powerful diuretic it was once thought to be.

Learn how each works and when it's best to use one versus the other.

You know what to drink during your workouts. But how about the rest of the day?

Know your limits, and be aware of how they change with your training and fitness level.

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

Hydration, especially in the hot summer months, is crucial for endurance athletes.

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

When eaten in moderation and in the right situation, sugar isn’t as bad for you as you think.