BluFit is the smart water bottle that helps you stay healthy by working with your phone to make sure you drink enough water. Studies show that nearly half of us are perpetually dehydrated leading to a variety of conditions, including decreased metabolism and brain activity. BluFit solves this by determining how much water you need, how much you’ve drank and by alerting you when it’s time to hydrate. This method ensures that your body is always operating at its best.
I suppose $60 is a fair price for something that’s Bluetooth enabled… but why the hell would you need a smart water bottle? Google returns plenty of links to how the “8 glasses of water” idea is a myth. For the most part, unless you’re eating a solid diet of dry crackers, you likely get most of your body’s required water from your diet. Some myths just won’t die.
The Australian and New Zealand Journal of Public Health has a good piece on the origins of the water requirements as a brief mention in an American dietary guide. From a footnote to a cure-all for everything wrong with the human body, including blaming caffeinated beverages from blocking water absorption.
Scientific endorsement of a minimal water requirement first appeared as a brief footnote in 1945, when the Food and Nutrition Board of the National Academy of Sciences in the US published its Dietary Guidelines. It recommended that, as the average male diet would consume 2,500 kilocalories (10,467 kilojoules), this diet would require 1 mL of water for each kilocalorie; consequently 2,500 mL of fluid should be ingested on a daily basis. This recommendation was repeated in the 1948 revision14 with no reference or authority cited in the calculation.
As a side-note, coffee and tea count as water, despite what you might have heard to the contrary; you’re taking in extra water with those beverages if you drink a lot of them, so it’s not the “diuretic effect” that makes you pee, it’s the “too much water effect” that does. The diuretic effect is, apparently, minimal.
While caffeinated drinks may have a mild diuretic effect — meaning that they may cause the need to urinate — they don’t appear to increase the risk of dehydration.
The Week links to a nice selection of articles on the myth surrounding the obsessive water drinking among non-athletes.
Research suggests that drinking water when you start to feel thirsty is sufficient should you desire to continue existing.