what happens when you are dehydrated?
<answer> Your body no longer has the amount of water it needs to carry out important tasks, including cognitive functioning, blood flow and waste elimination. <context> What Happens When You Get Dehydrated? If you get dehydrated, you’ve used more water than you’ve consumed. Your body no longer has the amount of water it needs to carry out important tasks, including cognitive functioning, blood flow and waste elimination. (Thinkstock Images/Comstock/Getty Images) Dehydration is classified as mild, moderate and severe.