But don't drink that much at once! Drinking even 2-3L at once may be very bad for your health. There are people who actually died from doing that as some kind of stupid dare or bet...
I was actually joking about the 4L but i actually drink a lot of water especially on summer now i am finishing the sec 1,5 L bottle but i guess its just a habit and i know that drinking a lot of water at once causes dehydration more easily but i dont have any problem with that.
