Is it true that you need to drink at least eight glasses of water a day?

Is it true that you need to drink at least eight glasses of water a day?

Adam Ruins Everything - Why You Don't Need 8 Glasses of Water a Day

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answers (2)

Answer 1
January, 2021

The wording itself smacks of advertising "yellowness". What kind of glasses? The "glass" is not a fixed value. And why exactly 8? Does the amount vary depending on the person's weight and the type of physical activity?

Anyway, it surprises me when the amount of water consumed by the body should not be regulated by the body itself, but by some instructions. Is the "embedded system" outdated and unreliable? Do you have to go everywhere with a timer and a graduated cylinder?

Answer 2
January, 2021

Bigger is better. In general, the daily intake of water is 30 mg ∕ kg of human body weight. This is true for people with more or less normal weight, which is calculated by the formula "height minus 100 plus or minus 10%." If a person is overweight, they need more water. The background diet is also important: if a person eats a lot of salty food, his need for water increases (though this does not mean that it is useful). But with water it is important not to overdo it. The water regime should be closely monitored for people prone to fluid retention, suffering from heart disease and prone to the formation of edema. A lot of water is harmful for hypertensive patients. It is believed that on average it is optimal to drink 2–2.5 liters of liquid per day, and this includes compotes, soups, and even liquid from solid foods such as vegetables or fruits.

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