Don't Drink Them in The Morning

You'd better not drink these kinds of water in the morning. They are bad for your health. 

Ice water

Many people like to have a glass of ice water in the morning. This is actually very unscientific. Drinking ice water easily causes gastric mucosal vasoconstriction and stimulate the gastrointestinal tract. As a result, gastrointestinal motility speed up and you can be diarrhea. People who drinks ice water, especially sweet ice water, can easily feel stomach ache.

Long-term boiling water

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

Brine

Some people think that drinking light salt water is good for health. Then they drink light salt water in the morning. Actually this is wrong. Drinking light salt water is good for health when we are necessary to add moisture after sweating in the summer. But drinking light salt water in the morning is bad for your health.

Beverage

You'd better not drink juice, cola, soda, coffee, milk r other beverages as the first glass of water in the morning.  Most carbonated beverages such as soft drinks and cola contain citric acid, which accelerates the excretion of calcium during metabolism and reduces the content of calcium in the blood. Drinking too much causes calcium deficiency. Other beverages are beneficial for urination and drinking these in the morning can increase the  demand for water, causing hydropenia.