To answer your question, NiJuIchi:
quote:
Originally posted by jwhitele:
When there is a drop in the water content in the blood, the salt concentration in the blood increases and you become thirsty.
"...a drop..." as in when the water level in your body decreases. So when you are dehydrated, this process occurs inside your body, triggering an undesirable outcome.
Just a general rule, the more water you drink, the better. Water takes out a lot of the toxins from your body and is needed for many essential functions.
Water=Goodness. 
