Up is down. Black is white. And dehydration makes you faster--if you time it right. It seems crazy, but scientists and coaches have begun experimenting with dehydration as a training tool, using it to ...

While dehydration is often associated with hot and humid conditions, it's important to drink enough water throughout the year to keep your hydration levels stable – even in colder temperatures, when ...

Ideally, you want to prevent dehydration from happening in the first place. If you’re competing in a big event, like a marathon or a bike race, drink up ahead of time. If it’s an early-morning race ...

Yesterday Gretchen Reynolds and I blogged more or less simultaneously about fluid consumption issues while running, particularly while marathoning. Gretchen's blog appeared here on the New York Times ...

If not, you might have enjoyed being part of an 8-decade-old study in which, one August, an exercise physiologist named Edward F. Adolph marched a squad of young men around the desert north of Yuma, ...

Training for his first marathon, Scott Williams was accustomed to logging long miles. But during a routine 13-mile training ...