Long home of the water, in which nitrogen-containing organic compounds will continue to be broken down into nitrite. Is stored long-standing water, it is inevitable that bacterial contamination, the nitrogen-containing organic matter decomposition was accelerated, nitrite generation are even greater. Nitrite and hemoglobin in the consumption of water will affect the blood oxygen transport function.
Therefore, the residual water in the thermos flask of boiling water for many days repeatedly boiled on the stove boiling water for a long time, its composition has changed and can not drink. Should drink a boil, no more than 24 hours of water.
In addition, a variety of pure water, mineral water bottles, bottled should not be stored for too long. Large bottle or bottled purified water, mineral water more than three days should not drink.
Some people think that drinking salt water good for your health, so early morning to drink salt water, this understanding is indeed wrong. Drink salt water is conducive to health is not false, sweating for summer added water is necessary, not only useless, for the morning to add water or a hazard to the health of the wrong practice.
The physiology of the studies suggest that people not drink water dripping all night sleep, breathing, perspiration, urinary progress, however, these physiological activities lost a lot of water to be consumed. Morning, the blood has become concentrated state at this time, such as drinking a certain amount of boiled water can quickly make the blood to be diluted to correct the night of hypertonic dehydration. Drink salt water will add to hypertonic dehydration, plus dry mouth very prepared. Moreover, the morning of the first peak of the human blood pressure to drink the salt water will make higher blood pressure and health hazards.
The first cup of morning is best not to drink commercial fruit juice, cola, soft drinks, coffee, milk and other beverages. Generally contain citric acid, carbonated drinks such as soft drinks and cola will accelerate the excretion of calcium in the metabolic process, reduce the content of calcium in the blood, and long-term drinking can cause calcium deficiency. Some drinks urination role early in the morning to drink not only can not effectively supplement the body's lack of water will increase the collective water requirements, but caused by the body dry.
Fruit juice, milk, coffee should not be as the morning of the first drink, because these substances can not provide a time the body needs water, but also so that the body in the water shortage in the state let the gastrointestinal digestion and absorption of work is not conducive tophysical health.
Therefore, we should get up early in the morning in order to remember some of their own health, "Water" is not drink.