Experts say that in the hottest outdoors, the human body can lose two liters of water per hour. They note that there is very little water loss during short-distance movements in city life, and therefore it is pointless to carry water with us at all times.

There is no serious harm in drinking 8 glasses of water a day. However, drinking more fluid than the body needs can sometimes be dangerous.

It has not been scientifically substantiated that fluid intake has other benefits besides preventing excessive water loss when the body is not thirsty.