Water, a liquid made up of hydrogen and oxygen, is the most important substance for life after air. About 55-70% of the body of living beings consists of water. You can live without food for weeks, and without water for several days. The human body needs water to stay healthy and maintain adequate blood volume. Due to these properties, water is called “secret food”.
The body shows that it is dehydrated by feeling thirsty. But when you feel thirsty, the body is already dehydrated, so drinking water without waiting for thirst is important for a healthy life.
An adult, healthy person should drink two liters (about 8 glasses) of water a day. Although drinking water is the most useful fluid for the body, unsweetened fruit juices, milk, soups and herbal teas can also meet the daily fluid needs. Along with fruits, vegetables and other foods, a significant amount of water enters our body. Since sugary drinks reduce water absorption, they cannot completely replace water. Coffee, tea and alcoholic beverages cause thirst as they increase the excretion of water from the body. A cup of tea and coffee is equivalent to only half a glass of water.
On a normal day, our body loses about two liters of water every day. 240 ml of water is lost in the form of steam with breathing, 120 ml with normal sweating, and 120 ml with defecation. The remaining amount is lost in the urine. If water intake is insufficient, a person produces infrequent, small and dark colored urine. The light color of the urine is an indication that the body can absorb as much water as it needs.
Sweating on hot days or after strenuous exercise increases the body’s water loss. In proportion to the lost water, the daily amount of water to drink should be increased to three or even four liters. Since the need for water will vary according to the environment and the person, the amount of water to be drunk should be adjusted according to the feeling of thirst and the color of the urine.
According to the degree of hardness, waters are generally grouped as follows:
Generally, spring waters are soft waters (1-14 FSD).
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