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The idea that you need to drink liters of water a day is a modern invention due to misreading of research. It completely depends on the weather, exertion, and how much water is in the food you eat.

https://www.mcgill.ca/oss/article/health-nutrition/water-myt...

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You deciding that need is a misreading is you assuming what other's lifestyles are. If you have one of your listed caveats, you need that amount. Your suggesting that it's not needed It also has to do with the person's metabolism and other factors.

You're right, I should have added genetics and disease as well! The gist is if your urine is of a light color and you have no issues there is no need to worry or try to force yourself to drink.

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