It is estimated that about 70% of the human body is made of water, so you can not live without water for a week without risking your life.
This vital fluid is essential for healthy skin, hair and nails, as well as for metabolic and catabolic reactions in the body. Sometimes you can develop some physical and even mental disorders when you do not give your body the daily water it needs. Feeling thirsty is the most obvious sign of dehydration, but there are some strong signals that warn you when your fluid level is dangerously low.
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