On a fairly regular basis I run across articles debunking the need for 8 glasses of water a day. I've never felt like including any them here in the past because the information is known by most. That being said, I ran across this article in slate that added some interesting facts to whole debate. They try to uncover how the myth started. Read bellow.
According to this theory, people ignored the last part of the statement, which points out that you can get most of that water just by eating. If you actually had to drink all 2.5 liters, you'd need around 10 8-ounce glasses per day. By 1959, the concept was so entrenched that Groucho Marx could joke about self-righteous centenarians who claim that they eat "raw turkey liver" for breakfast and drink "thirty-two glasses of water a day" instead of "eight glasses a day like the rest of us."
However, the Explainer has uncovered evidence of the 8x8 myth going all the way back to 1796, in a German text by Dr. Christoph Wilhelm Hufeland called Makrobiotik. The book includes an anecdote about the surgeon general to the king of Prussia, a vibrant 80-year-old man who had "contracted the habit of drinking daily from seven to eight glasses" of cold water and thus "enjoyed much better health than in his youth." (An English translation is available in this book from 1843.) (Full Story)
[Picture via ragbrai]
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