Water transport nutrients and oxygen nourishes all parts; is solvent soluble substances; maintain average temperatures; participated in the absorption and metabolism of food into energy to give all activities of the body; residues excreted through the urinary system, digestive, respiratory, skin; protecting the vulnerable organs avoid injury; is the main component of mucus protects the joints, prevent inflammation, pain in every movement; humidifier helps the respiratory rhythm; preventing the formation of blood clots in the arteries of the heart, the brain, reducing the risk of stroke and myocardial infarction; necessary for the production of neurotransmitter, hormones regulate vital functions and biochemical reactions in the body.
A person can fast for several weeks but still alive, but if fasting drink in 3 or 4 days, it will be fatal. Because the human body, water occupies 60-70% of body weight, distributed in all organs like brain, blood, heart, liver, lungs, kidneys, bones and joints, muscles ... and have role important components that make up the organs such as the brain is 85% water, blood 92%, 95% gastric, muscles 75%, 22% bone, teeth 10% ... If these parts mild to moderate dehydration will cause body fatigue, somnolence, crying with few tears; urinating less, constipation; dry skin, itching, because the cells dehydrated skin peeling, acne; nosebleed because dry mucous membranes, blood vessels more vulnerable; headache, dizziness, weak muscles; recurrent urinary infections because less urine should not eliminate residues and bacteria in urine; also easy to form kidney stones or regeneration due to the concentration of minerals; inflammation increases the risk of mouth, throat, respiratory air through the nose is not dampened, irritating and makes the lungs more sensitive to smoke, dust, chemicals, allergic rhinitis ... Where missing severe water will lead to hypotension, tachycardia, urinating less; dry mouth, very thirsty; skin, dry mucous membranes, no sweat; dry eyes and sore, your body off balance ...
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