Butasthebrainswellsfurtheryoucanhavetroublebreathing, experienceseizures, gointo a coma, orevendie!
Theexactamountofwaterneededtocausewaterpoisoningvariesfrompersontopersonanddependson a numberoffactorslikehowmuchyouaresweating, butmostofthereportedcasesinvolvepeopledrinkingmultiplegallonsinjust a fewhours.