Benefits of drinking cold water in winter:

It can prevent colds, pharyngitis and some skin diseases. Especially drinking a cup of cold boiled water after getting up in the morning can not only enhance the detoxification ability of the liver and the excretion and washing ability of the kidney, but also promote metabolism, enhance immune function, help lower blood pressure and prevent myocardial infarction.

Disadvantages of drinking cold water in winter:

Heart: When cold water is rapidly swallowed into the esophagus through the mouth, the reflection of esophageal mucosa will stimulate the contraction of the esophagus and the irregular heartbeat of the next-door neighbor. The general feeling is chest discomfort, especially after strenuous exercise, suddenly drinking a lot of ice water, similar to myocardial infarction (angina pectoris). Vascular circulation: when the circulating blood volume decreases, people will feel weak and cold in their limbs, just like shock. At this time, warm water is needed to enrich the circulating blood volume, and hot temperature can dilate blood vessels and improve circulation. If you drink a cool diet, you will absorb the scarce calories in your body.