بحث حول اهمية الماء بالانجليزية

موضوع انجليزي عن الماء للصف الثامن فقرة  برزنتيشن بحث موضوع ملخص جاهز باللغة الانجليزية  انشاء موضوع انجليزي عن ابدا قصير كيفية كتابة موضوع تعبير باللغة الانجليزية توجيهي قواعد كتابة تعبير  بالانجليزي طريقة سهلة لكتابة تعبير بالانجليزي موضوع تعبير انجليزي يصلح لكل المواضيع كتابة تعبير بالانجليزي عن نفسك وصف تعبير انجليزي يصلح لكل المواضيع موضوع انشاء شامل لكل المواضيع موضوع يصلح لجميع المواضيع موضوع تعبير انجليزي جاهز برجراف ينفع لاى موضوع  موضوع انجليزي عن الماء تعبير عن الماء بالانجليزي قصير وسهل فوائد الماء بالانجليزي قصير بحث عن الماء  عبارات  بالانجليزي طويل فوائد الماء للجسم  قصير وسهل بحث انجليزي عن تلوث الماء  فوائد شرب الماء بالانجليزي اهمية الماء بالانجليزي مترجم تعبير عن الماء بالانجليزي ثالث ثانوي برزنتيشن عن الماء بالانجليزي  برزنتيشن عن الماء بالانجليزي قصير  عن المياه المياه المائية خمس سبع ثمان تسع اربع جمل كلمات كلام مقال علمي مقدمة شرب الماء

How much water to drink?

In a temperate climate, a person of average size spends more than 2 liters of body water per day. In fact, the body loses more than one liter per day of body water through the urine, and the same amount through sweat, stool and breathing (as revealed by the mist on a mirror placed near the mouth ).

Water losses are greater:

in hot weather;

during a physical activity;

during breastfeeding;

in case of illness.

Each person therefore has their own water needs, given their size, the climate they live in and their way of life.

To evaluate these needs, the Mayo1 Clinic in the United States offers three approaches that recognize that our diet also provides water, especially with fruits and vegetables, which for many are over 80 % water. These measures serve as scales. They are not based on precise scientific data.

Drink water: why and how much? Replacing. Evaluate the amount of urine excreted per day (about one and a half liters in an adult) and add one liter of body water spent on metabolism (moderately active person). The loss is 2 liters and a half. As food supplies on average 20% of our water needs, there is 2 liters to recover. It is found in broths, hot or cold drinks and, of course, in drinking water.

The eight glasses of water a day: a myth. It is about eight glasses of water or other liquids: juices, broths, hot drinks, etc. Drinks other than water contribute to total water intake. Each glass is the equivalent of one cup (8 oz), which gives a total of about 2 liters.

Are the rules different for athletes?

Athletes are very exposed to dehydration due to sweating. They sometimes risk hyponatremia, which is the electrolyte imbalance of the blood system. Here are the recommendations of the American College of Sports Medicine4,5:

Drink enough water every day.

Drink half a liter of water about two hours before an activity.

Drink throughout the activity, enough to replace the water lost by sweat. In the case of intense aeraulic activities, a person can lose more than one liter in the form of sweat in one hour.

The water should be cool, from 15 ° C to 22 ° C.

If the activity is demanding and lasts more than one hour, use an isotonic drink (which includes carbohydrates, sodium and potassium), also called energy drink.

Can we drink too much water?

Even when drinking a lot of water, there is no danger of "diluting" nutrients that have been ingested or excreted. Although extremely rare in a healthy person, excessive water intake can still cause a potentially dramatic blood problem. This is sometimes encountered during sporting events, in marathon runners or cyclists.

A very large influx of water, beyond the quantity necessary for the biological functions, will not give rise to magical benefits,

Note that excessive thirst can be a sign of diabetes. See our special section Diabetes to learn more about this disease.