Long-term boiling water

After boiling water for a long time, nitrogen-containing organic matter will be continuously decomposed into nitrite. In particular, water stored for a long time is inevitably contaminated with bacteria. At this time, decomposition of nitrogen-containing organic matter is accelerated, and more nitrite is produced. After drinking such water, the combination of nitrite and hemoglobin will affect the oxygen transport function of the blood.

Therefore, the water in the thermos for several days, the boiling water that has been boiled for many times, and the water that has been boiling on the stove for a long time have changed their composition and cannot be drunk. You should drink boiled water for no more than 24 hours. In addition, bottled, bottled purified water, mineral water should not be stored too long. Large bottles or barrels of pure water and mineral water should not be drunk for more than 3 days.


Some people think that drinking light salt water is good for your health, so drinking light salt water in the morning is really wrong. Drinking light salt water is good for health, which is necessary to add moisture after sweating in the summer, but it is not beneficial for supplementing water in the morning, or it is a wrong practice to endanger health.

Physiological studies suggest that people do not drip during the night, but breathing, perspiration, and urinary tract are in progress. These physiological activities consume a lot of water. When you wake up in the morning, the blood has become concentrated. At this time, if you drink a certain amount of boiled water, you can quickly dilute the blood and correct hypertonic dehydration at night. Drinking salt water again will aggravate hyperosmolar dehydration, which will add to dry mouth. Moreover, the morning is the first peak in human blood pressure, drinking salt water will make blood pressure higher and harm health.


The first glass of water in the morning is best not to drink commercially available juice, cola, soda, coffee, milk and other beverages. Most carbonated beverages such as sodas and cola contain citric acid, which accelerates the excretion of calcium during metabolism and reduces the content of calcium in the blood. Long-term drinking leads to calcium deficiency. While other beverages are beneficial to urination, drinking in the morning can not only effectively supplement the lack of moisture in the body, but also increase the collective demand for water, but cause water shortage in the body.

Juice, milk, and coffee are also not suitable as the first drink in the morning because these substances do not provide the most needed moisture for the body at this time, but also allow the body to digest and absorb the gastrointestinal tract in the absence of water. It is good for your health.

Tap water

Someone used to get up in the morning to turn on the tap and drink a glass of tap water. This is wrong. Stopping overnight taps and tap water in the water pipes are still. These water and metal pipe walls and faucet metal chambers will produce hydration reactions, form metal contaminated water, and residual microbes will grow in tap water. This water contains A large number of substances harmful to the human body may also harbor an acute respiratory infection pathogen, Legionella, which threatens human health. Therefore, when you turn on the tap in the early morning, the tap water that was originally discharged is non-drinkable, so people with such habits should correct it immediately to avoid harming their health.

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