When I'm waking up in a hotel anywhere in the world, I get up around 5 a.m. and drink 24 ounces of water. I walk around the room (even if it's super tiny), look out the window, and think about the ...

We're all familiar with the old adage: Drink eight glasses of water at 8 ounces each every day. It's the eight-by-eight rule that guides us to drink 64 ounces (about 1.9 liters) of water each day.