If you went several days without drinking water, you'd be in a world of trouble. But the idea that eight glasses a day is optimal—well, that's soggy logic. In 1945, The Food and Nutrition Board of the National Academy of Sciences claimed that the body needed two-and-a-half liters of water a day (which is actually ten cups of water a day, even more than the widely-referenced eight)—without citing a clinical study! Not only did people take this recommendation as fact, they also ignored the next sentence: "Most of this quantity is contained in prepared foods." From the looks of it, it's clear that we're a culture obsessed with getting those fabled eight glasses of H2O a day. In 2016, bottled water sales exceeding soda sales for the first time in recorded history, and there appears to be a new artisan bottled water brand introduced to the market daily. But while ensuring that you're adequately hydrated is important, how many of us view hydration doesn't quite jibe with what the science tells us. Below, we've found the most common ways you could be drinking wrong, and what you should be doing instead. Read up, drink up, and don't make these water mistakes count as one of the 40 Habits That Make You Sick and Fat. #wrongwayofdrinkingwater #drinkingwater