Without food a man can survive for quite three weeks – without liquid you die, however, after a few days. Daniela Krehl of the Verbraucherzentrale Bayern advises to drink at least 1.5 liters of water to meet the fluid needs of the body.

Because of The day the body loses approximately 2.5 liters of fluid through the urine, the stool, the skin and via respiration. About a Liter of it, in the section about food. You drink around one and a half liters of fluid a day, is offset in the balance sheet about. "To be on the safe side, you should drink two to two and a half litres of water," advises Krehl.

How much water in strong summer heat?

it is, however, only an approximate value. "The need for liquid increases at high temperatures, such as now in the summer, and in the case of heavy physical activity," said Krehl. Then, the demand may increase to even five to six liters a day.

If you don't drink enough, the quickly noticeable: Many people get headaches, can concentrate poorly, and so performance are no longer physically capable of. Also dizziness and fatigue can set in, as a dry mouth or dry lips. (Also read: These are the consequences, if you drink in the morning, a glass of water)

a Lot of fluid in a very short period of time can be problematic

conversely, it may also be unfavorable, if you drink too much. "This is especially problematic when one takes within a few hours of very large quantities of liquid," said Krehl. This is, for example, in the case of extreme athletes who drink after a competition within a short period of time, liters of water. (Also interesting: This is the healthiest food in the world)

The Problem is that The salt balance in the body can be so out of whack. This is because the content diluted in sodium in the blood is greatly. "As a result, it can cause symptoms such as dizziness, Nausea, headache, and spasm and in extreme cases, Edema in the lung and the brain," said Krehl.

The right amount to drink after sports

you should drink a lot of it after the sports, one can also calculate, for example, the drink calculator of the Swiss Sports Nutrition Society. He is suitable for training sessions that last at least an hour long.

In addition, apply the 1.5 Liter on the day as a rough guide for people who don't drive extremely a lot of sports. Some people have a higher need for fluid, others with a little less than 1.5 liters. "On the feeling of thirst, you should not leave but," said Krehl. "The thirst you can work off feel also."

The goal should therefore be at least 1.5 liters of fluid a day, preferably in the Form of water or unsweetened herbal teas. Also possible is strongly diluted spritzers are. If someone has difficulties to reach this target, can help the following tips:

1. The same in the Morning drink a glass of water

To a large extent, it is a question of habit, how much water someone drinks of the day. You can increase your value by well drink in the Morning before Breakfast with a large glass of water. In this way, you create a new Ritual and increase the Chance to give the day more often once a glass of water.

2. The water within sight have

you should always have a water bottle or a filled glass in sight. You place this for example on your Desk or on the TV table, if you sit in the evening on the Sofa. So you can't forget the Drink, but will always grab back to the water, and quite imperceptibly, their drinking volume increase. (What really helps against the constant fatigue, you can find here)

3. You fill the water

make Sure that you always have water with you when you leave the house. This allows you to take in the car or in the train again and again, even a SIP. If you want to buy water in the supermarket, you can also use a water bottle. This not only saves money but also protects the environment. (The most beautiful bottles you can find here)

4. Drink a glass of water for a coffee or a beer

alcohol is known to remove water from the body. Therefore, you should pay particular attention to a sufficient fluid intake if you drink alcohol. The additional water also helps to prevent a nasty hangover the next Morning. It is a good idea also, if you order a coffee, a glass of tap water.

5. Spice up your water

If it is boring to drink only water, then for flavor: Give you, for example, herbs such as mint, thyme or sage in the bottle, or add berries, lemon or cucumber slices. To provide a different opportunity for variety in the water glass, the small effervescent tablets of the water drop into the bottle and your water has valuable additions, such as ginger, dandelion, Moringa, or even Acai.

6. You can use an App

Maybe I like you, against themselves, to compete and to beat your own drinking worth it? In this case, Apps can remind you to drink enough. There are some Apps to this topic are available, for example, "water Tracker" "water alarm clock" or "drinking water" as well as the "water drinking Aquarium".

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*The contribution of "So much water submitted by Maria Berentzen should be published actually drink" is from GQ. Contact with the executives here.