UW Extension

It's essential to stay hydrated as temperatures climb. Drinking enough fluids is one of the most important things people can do to prevent heat-related illness.

As a person loses fluids, dehydration occurs. Heat stroke and heat exhaustion are serious health conditions that can be avoided.

About two-thirds of your body weight is water. Your body, including your heart, kidneys and blood, needs daily water to function. According to the National Institutes of Health, even when you're inactive, your body loses more than a quart of water daily through urine, perspiration, sweat and breath. Water is...