Water is essential for life. Humans have no capacity to store spare water, so we must quickly replace any that is lost.Water is the highway that moves nutrients and wastes between cells and organs. It carries food through digestive system, transports nutrients to cells and tissues, and carries waste out of our body in urine. Watery fluids act as shock absorbers, lubricators, and cleansing agents. For example, amniotic fluid cushions and protects the foetus, synovial fluid allows joints to move smoothly; tears lubricate and cleanse the eyes, and saliva moistens food and makes swallowing possible.
Water Excreation
We continuously lose water through various routes-exhaled air, perspiration, faeces, and urine. Water loss increases in an airplane. Fever, coughing, rapid breathing, and watery nasal secretions all increase water loss significantly.
Water Facts
* Our body consist of 55-75 % water.
* Water is the main food the body needs.
* The thirst reflex appears only when our body is dehydrated.
* We often mistake our thirst mechanism for hunger pangs.
* Children dehydrate more quickly than adults do.
* Mild dehydrate...
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