Originally Posted by
Abe_Froman
The reason you cant drink an infinite amount of water is hyponatremia. You're essentially diluting the salt content of your body with pure water. A few liters isnt going to make a difference. Multiple gallons, and you might start feeling pretty funny. I've had it...you get kinda weak, and feel almost dehydrated, which of course makes it even worse.
Too much plain water is not good. I've been there. You don't just get weak in the knees, its a pretty miserable head feeling too.