A healthy body must keep water balanced. People should drink seven to eight glasses of water in a day. After a night's sleep, people will certainly drink water when they get up. So, the first glass of water in morning is very important, it not only can supplement the water lost during sleep, but also can clear out the stomach. Perhaps you have been accustomed to drink a glass of water in morning. But have you ever think about how to drink the first glass of water in morning? Which drink should we take? Fresh water is the best choice. Plain boiled water is the natural water that goes through layers of purification. When water is boiling, the micro-organism has been killed, while the calcium and magnesium in water are good for health. Studies have shown that hard water which contains calcium, magnesium and other elements has a preventive role in cardiovascular disease. Many people think that drinking light salt water is conductive to health. So they drink light salt water in the early morning when they get up. Actually it is not true. Studies suggest that people don't drink any water during sleep, but breathing, sweating and urination are still going on. These physical activities need consume lots of water. Drink water in the morning can make blood quickly diluted and correct the hypertonic dehydration in night. Drink salt water will make hypertonic dehydration become serious, make you thirstier. Moreover, in the morning, body will achieve its first peak in blood pressure; drinking salt water would make blood pressure higher. In addition, you'd better not drink fruit juice, cola, soft drink, coffee and milk in the morning when you get up. Because soft drinks, cola and carbonated contain citric acid which will speed up the excretion of calcium and reduce the content of calcium in blood. Drink these drinks for long time will lead the loss of calcium. Other drinks have a diuretic effect, drink it in the morning cannot supplement the water lost effectively, instead it will increase the body's demands for water, thus make the shortage of water in body. What is the most appropriate temperature? Some people like to drink ice water; they think it can help to lift spirit. In fact, it is not good to drink ice water in the morning. Because in the morning, our stomach is empty, water too cold or too hot will irritate the stomach. Therefore, the warm water is the best.
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