Aldo respect, this article is a waste of time. We're so obsessed with putting a number on everything - that's why the "8 glasses a day" rule exists. It's not literal. It means "drink a lot of water throughout the day and you'll feel better." Which is true. I drink tons of water and it's made a massive difference in every aspect of my life. I have no idea how much I drink daily, though. It doesn't matter. Because we're all different. Just drink more water, and stop trying to figure out that magic number by reading articles from the media that change every week.