I keep seeing these things about how people should drink 2 liters a day or 3 liters or whatever but if i had to estimate i think i drink about 0.5 to 1 liter a day, i just drink when i feel thirsty and that’s the amount i need to drink in a day to not feel thirsty…
If we only eat when we’re hungry why do we have to drink when we’re not thirsty?
In: Biology
We need approximately 30 ml per kg of body weight. For a 70 kg person, it is a little over 2 lts of water per day. But this doesn’t mean 2 liters of “pure” water.
Beverages like juice, milk, sodas, coffee, all have water. It is not the same as drinking only water, but still hidrates you. Coffee is a weak diuretic (actually a calciuric, meaning it makes you pee calcium among other minerals) but the effect is minimal so it still hydrates you. Alcohol on the other hand, it is a diuretic which can dehydrate you (and dehydration is one of the reasons you get a hangover).
Also the foods we eat have water, fruits and vegetables have lots of water and tgis hydrates you.
In some metabolic reactions in your body water is a byproduct, so this provides a small quantity of water for your body (but just water, not electrolytes).
So even if we need around 2 lts of water, we have many more resources besides a glass of water to get it, which is why your body isn’t thirsty all the time
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