The 8 glasses of water thing started about the same time people started buying/selling drinking water. Makes you wonder?
Jim
That's strange because the earliest nutritional advice from yogis as well as Chinese Medicine and which are 3,000+ years old suggest 1/2 your body weight in ounces of water per day, and there are many texts that explain how tiredness, aching joints, dry skin, headaches, etc. are all because the body is not getting enough water.
So I doubt this is a conspiracy on the part of bottled water sellers.
but I don't drink 64oz per day.....I tend to drink when I am thirsty which apparently means I'm already dehydrated