The weather is hot, people are prone to sweating, in sweating, in addition to the loss of water, will also take away a lot of salt in the body, people will feel thirsty. At this time, some people drink, resulting in reflexive sweating, so that the body loss of water more, the more you drink the more thirsty, dizziness and weakness of the phenomenon, medically known as "water intoxication".
The general scientific method of drinking water is: first drink a little, moist mouth, after a period of time and then drink water, it is best to drink a little salt water. Because our body only needs a certain amount of water, if too much will only be excreted through the urine.