Section: Paragraph Comprehension
107)
If you are thirsty, most likely you are already dehydrated. Most people underrate the importance of drinking water all day long. They wait until their throats are parched or they eat meals before they drink any fluids -- and they usually don't choose water. Since the human body is about two-thirds water, drinking it is essential to maintaining good health. Just a few of the benefits of staying hydrated are better memory throughout the day, increased energy, and less tiredness.
In this context, parched means
