Appeasing the age old rule of thumb, websites still advocate the once theorized “eight (8) - eight (8) ounce glasses a day”. I’d like to take a few minutes of my day to paraphrase, simplify, and debunk this myth (yet again) in MY own words.
To begin… Is 8 fluid ounces, 8 times a day the best advice?.
In general, to remain healthy we need to take in enough water to replace the amount we lose daily through excretion, perspiration, and other bodily functions, but that amount can vary widely from person to person, based upon a variety of factors such as age, physical condition, activity level, and climate. The “8-10 glasses of water per day” is, again, a rule of thumb, not an absolute minimum, and not all of our water intake need come in the form of drinking water.
To re-iterate, the amount of water that should be consumed a day isn’t a solid number, but one proportional to the body weight of said person in conjunction with the bodily functions carried out that use up this resource! Which brings rise to Water Requirement calculators 1 and 2 that can provide you with an estimate of how much water you should consume to remain hydrated, in reference to your body weight.
Can’t be bothered with inputting some personal data, or too afraid to look obesity in the eye? No problem! for a base line of water you should consume a day, aim for
2 LITERS 
Why, you ask?
*fun “fact”
Promo for Drinking Bottled Water. The text reads:
“Because water is so important, health and nutrition experts recommend
drinking at least two liters of water each day. This makes bottled water
a convenient way to assure that enough water is consumed at home, work,
or wherever a person may be.”
and with that, I can now conclude that this myth is
*BUSTED*
