 When you drink quickly, improper absorption causes our body to flush out the excess. But that flushing also carries away body salts, leading to fatigue and headaches. In extreme cases, it can result in water intoxication. So even when you find yourself dying of thirst this summer, do your body a favor. Sip, don't chug. That is the Old Farmers' Almanac Radio Report. Learn more at almanac.com.