I remember back in the 80's and 90's Dr. Dean Edell on his talk show routinely tried to bash this "8 cups of water a day" rule of thumb as an urban legend.
He says in this 2002 post that your body weight * 0.08 is the approximate number of cups of water you should get, but I think that includes all that you normally get from food too.
It's really hard to tell what the right number is since there are so many variables involved. And you're right, water comes from other places too. The one thing that is certain is the 8 cups is definitely on the short side.
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Interesting. 3l is about 12 cups.
I remember back in the 80's and 90's Dr. Dean Edell on his talk show routinely tried to bash this "8 cups of water a day" rule of thumb as an urban legend.
He says in this 2002 post that your body weight * 0.08 is the approximate number of cups of water you should get, but I think that includes all that you normally get from food too.
It's really hard to tell what the right number is since there are so many variables involved. And you're right, water comes from other places too. The one thing that is certain is the 8 cups is definitely on the short side.