Nowadays you hardly see anyone going over the street without a bottle of water. Everyone 'knows' that we have to drink enough water, at least two liters per day. That is healthy - we have been finding for a number of years. Drink plenty of water! Give the body what it needs: Water.
Scientists in Australia did an equally remarkable and simple survey this year (published in the British Journal of Sports Medicine). They looked at what effect dehydration had on physical performance. A group of cyclists was sent into the Australian heat and cycled until they had sweated 3% of their body weight. Then they were given fluids intravenously, so they did not know how much fluid they actually ingested. Moisture and drinking water. One group got nothing, one group got enough to get 2% dehydration, and the third group got all the fluid lost. After that, their performance was measured again and what was the outcome: it did not matter whether or not they had been supplemented with their moisture reserves.
That was a surprise. Do athletes have to monitor their fluid balance? They do this extremely fanatically. Do you see a tennis champion or cyclist drinking water? Athletes prefer to drink special sports drinks, isotonic brews that immediately fill every drop of sweat with all lost minerals. So you do not have to undergo a dip in your performance. Because, we think, to perform optimally you need to be optimally hydrated.
What does water do in your body. And now let that in our heads to be stopped by smart marketers of soft drink producers and water companies.
People in temperate climate zones that do not make heavy physical effort get enough fluid when they consume one and a half to two liters of fluid a day. And the moisture in your cucumber, your coffee, your steak and even your beer just counts. If you get too little, you will automatically drink. The biggest risk around water consumption does not appear to be dehydration, but water poisoning by drinking too much water. You can even die from that. 5 Reasons why drinking water is good for your heart, brain and metabolism.
It turns out to be much simpler than we started to think. Your body is a great moisture regulator. Do you drink too much, then you pee the excess out again. If you drink too little, you get thirsty and you start peeing less. The fact that we are all floating around with water today is really entirely due to the campaigns of a number of smart marketers and companies. "Saying that you have to drink more water than your body requires is just like saying that you have to breathe more often because, if a little bit of oxygen is good for you, then you should be better off".