We've all heard that, but what does it mean? How big is each glass? Does juice count? How about coffee? Beer? Does it matter how big I am? Can I get them all out of the way before 9 AM?
I'm in the water business and I wasn't sure how to answer any of these questions, except for the beer one. So I looked into it and I found a recently published (Short) article out of Sydney, Australia that nails it. Enjoy! Don't Do it!