When you wake up in the morning, remember not to drink these 4 types of water

Drinking water early in the morning has always been considered a healthy lifestyle, but not all water can be drunk early in the morning. Have you noticed? Remember not to drink this water.

1. Boiled water and purified water that have been stored for too long

After boiling water is left for a long time, the nitrogen-containing organic matter in it will continue to be decomposed into nitrite. Especially boiled water that has been stored for too long is inevitably contaminated by bacteria. At this time, the decomposition of nitrogen-containing organic matter is accelerated, and more nitrite is produced. After drinking such water, nitrite will combine with hemoglobin and affect the blood's oxygen transport function.

Therefore, the composition of boiled water in a thermos for many days, residual water from multiple boilings, and water that has been boiling on the stove for a long time have changed and cannot be drunk. You should drink boiled water once and not more than 24 hours later.

In addition, various bottled or barreled purified water and mineral water should not be stored for too long. Large bottles or barrels of purified water or mineral water should not be consumed for more than 3 days.

2. Add salt to boiling water

Some people believe that drinking light salt water is good for health, so they drink light salt water in the morning. This understanding is indeed wrong. It is true that drinking light salt water is good for your health, and it is necessary to replenish water after sweating in the summer. However, it is not only unhelpful for replenishing water in the morning, but also a wrong practice that is harmful to your health.

Physiological research shows that although people do not drink a drop of water during a whole night of sleep, breathing, sweating and urination are still going on, and these physiological activities consume and lose a lot of water. When you wake up in the morning, your blood is already in a concentrated state. Drinking a certain amount of boiled water at this time can quickly dilute the blood and correct the nocturnal hypertonic dehydration. Drinking salt water will aggravate hypertonic dehydration and make you feel even more dry in the mouth. What's more, morning is the first peak of blood pressure in the human body. Drinking salt water will make blood pressure higher and endanger health.

3. The water that first flows out of the tap

Some people are used to getting up in the morning, turning on the tap and drinking a glass of tap water. This is wrong. The tap water in the faucet and water pipe that has not been used overnight is stagnant. The water, metal pipe walls and metal chamber of the faucet will produce a hydration reaction to form metal-contaminated water, and the residual microorganisms in the tap water will also multiply. This water contains a large amount of substances harmful to the human body and may also hide Legionella, an acute respiratory infectious bacterium that threatens human health.

Therefore, when you turn on the tap in the early morning, the first tap water that flows out is undrinkable dead water, so people who have this habit should correct it immediately to avoid harming their health.

4. Juice, carbonated drinks, etc.

It is best not to drink commercially available juice, cola, soda, coffee, milk or other beverages as the first glass of water in the morning. Soda, cola and other carbonated drinks mostly contain citric acid, which accelerates the excretion of calcium during metabolism and reduces the calcium content in the blood. Long-term drinking can lead to calcium deficiency. While other beverages are conducive to urination, drinking them in the morning will not only fail to effectively replenish the body's lack of water, but will increase the body's demand for water, which will cause dehydration in the body.

Juice, milk and coffee should not be the first drink in the morning, because these substances cannot provide the water that the body needs most at this time. They will also cause the gastrointestinal tract to digest and absorb in a state of dehydration, which is not good for the health of the body.