[mapuc]

Funny you mentioned this plan on drinking 2½ liters of water per day.

Some years ago I said to my doctor-It is said that I should drink around 2-2½ liters of water, but I have difficulty to even drink a liter a day.

Then she said

But you do drink water when thirsty

Me:
Of course I drink to the point where I'm not thirsty anymore. There's a difference between winter and summer. During Summer and hot weather I can drink up to 3-4 liters per day.

Then she said

Well then everything is ok-These 2½ liter water per day is an average of what an active ground-up should drink per day.
(Taken from memory, so I can have missed some words)

Markus