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.

The British National Health Service recommends a daily water intake of 6-8 glasses. This includes skim milk, sugar-free drinks, tea and coffee.

However, after the age of 60, the body's thirst mechanism loses its sensitivity, which increases the risk of water loss in the elderly.

Therefore, older people should be careful about fluid intake.

In addition, it is important to remember that the daily water intake depends on a person's age, sex, environment and physical activity. From this point of view, the rule of drinking 8 glasses of water a day is a very simple approach.