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
You don’t have to drink when you are not thirsty. That’s a myth. Your body regulates it’s own water intake using thirst far better than you ever good.
It started with an estimate for the average amount needed by the average human adult. Notice I used words like average and estimate. The actual amount of water you need varies wildly from person to person and from day to day.
Drink when you are thirsty and you will get the right amount for your current needs. Only exception is when you consume a lot of something that messes with your water balance, such as alcohol.
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