Dehydration

Add "water" to the long list of things to be worried about.

Triathlete has the exclusive official details on the recently signed Mortal Hydration partnership, and we speak to an independent sports nutritionist on what the change means for those who still use Gatorade Endurance for their race-day needs.

Don't make nutritionist Matthew Kadey's naughty list: After your next sweaty workout, make these five hydration changes to bounce back faster and get more out of your training session.

Performance nutrition coach Scott Tindal weighs the pros and cons of hyperhydration (also known as “water loading”) before a race or big training day.

30 years of Ironman World Championship data explains how warning signs of low sodium and hyponatremia differ by sex.

And it's not just because of the physiological responses inside your body. Dehydration gets inside your head.

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

Learn about the dangers of dehydration.

Being in tune with daily hydration levels impacts training performances, and ultimately racing fitness.

Being dehydrated by as little as 2 percent of your body weight can begin to increase fatigue.