The importance of water for human
A large part of the human body consists of water. Water is one of the most important substances necessary for life. Our muscles, organs, tissues and even bones are composed of water and require constant replenishment. The adult human body consists of water seventy percent, and the newborn child is almost ninety percent liquid.
Water moves in the body minerals and trace elements, eliminates toxins from the body, recycles the decay products, regulates body temperature. For the proper functioning of all organs and systems needed in day to consume about 40 milliliters of water per kilogram of weight. Also during the day, the organism appears about the same number. The lack of water in the body can lead to dehydration, a person dies in a few days.
How long can you live without water?
If without food a person can live a long time, water scarcity is strongly felt after a few hours, and leads to death in just a few days. The timing may be different depending on several factors. Scientists estimate that on average only 3 day to healthy people have died without water. But there are many cases when people are held 5 days a week and even 10 days. If, after such stress on the body of the man survives, his health would be irreparably damaged.
The record for survival without water is owned by the Japanese, who survived twenty-four days without food and liquid. Most of this time he spent unconscious.
First time of a lifetime without liquid dependent on ambient temperature and human activity: if you stay in the shade and sitting still with the air temperature from 16 to 23 degrees, you can survive up to 10 days. When the temperature increases 3 degrees, the lifetime is reduced without water for a day. In deserts, where the air is heated to 40 degrees during the day, a person can die in just two days.
Also the life expectancy in such conditions depends on the state of health, metabolic rate and physique of the person. Fat reserves help extend the life time.
The most common way of survival in conditions of water scarcity: take a small round pebble and put in his mouth. Thus stimulated the salivary glands that moisten the mouth that distracts from thirst and gives time and effort to find water. Also, the stone contains minerals that will support the body.