All kinds of life activities of the human body are inseparable from water, and the chemical reactions of metabolism must be carried out in aqueous solution, so you must drink a proper amount of water every day. But some people often drink water when they are dry, which is actually unscientific.

Because it usually takes half an hour after drinking water to transport it to various organizations. When your mouth is dry, you drink water. At this time, the body tissue is already in a state of dehydration, which disturbs the normal water-electrolyte balance of the body. After a long time, there will be a phenomenon of "getting angry", dry mouth, red and yellow urine and even constipation. So don't wait for dry mouth to drink water.

But drink water in moderation, because drinking a lot of water at a time will easily cause stomach discomfort, increase blood volume and increase the burden on the heart. Healthy people had better drink water at least 4-5 times a day, 200-300ml each time. Digestion of food requires digestive juice, and drinking proper amount of water one hour before meals is helpful for digestion. Because water is absorbed by blood and reaches all tissues and cells in the whole body, the secretion of digestive juice is guaranteed.

So when eating, it won't feel dry, but it tastes and absorbs, which is conducive to losing weight. Not only is it helpful for digestion to drink too little water every day, but also the urine is red and yellow, indicating that the concentration of metabolic waste discharged from urine is high, and the high concentration of salts in urine is easy to form crystals, which may cause urinary calculi and urinary tract infections over time.

Drinking more water will cause more urine to pass through the urinary tract, which will play a role in cleaning and washing and play a preventive role. Drinking water in the morning is beneficial to urinary tract diseases and longevity. Because through a day and night metabolism, the skin and respiratory organs consume a lot of water, coupled with the formation of urine, the body is relatively short of water, blood is concentrated, blood flow is slow, and metabolites accumulate in the body. If you drink 300 ~ 500ml warm boiled water on an empty stomach in the morning, you can flush metabolites, remove gastrointestinal toxins, reduce blood viscosity, promote blood circulation, prevent cardiovascular diseases and stroke, which is good for your health. Long-term persistence can prolong life.

Drinking water before going to bed can dilute blood and prevent stroke. However, patients with heart failure or renal failure should control the amount of drinking water and the condition. In order to avoid aggravation, it should be noted that all drinking water should not be kept for too long, even the boiled water in thermos bottles or cans should not be kept for more than 3 days. The inexhaustible water can only be used, not drunk. Don't add water to the water storage bottle continuously, so as not to accumulate for too long, and the nitrite in the water will increase greatly.

After storage in cold boiled water for 3 days, nitrite in water increased by 12 times, and the longer the storage time, the higher the content. People who drink too much nitrate may have nausea, vomiting, headache and palpitation, and even die from lack of oxygen. In addition, the combination of nitrite and organic amine in the body will produce carcinogenic nitrosamine, which is easy to induce liver cancer, gastric cancer and esophageal cancer.