Salt water is a glass of water with salt added, which is called salt water. There are many functions, such as drinking a glass of salt water in the morning when the throat is inflamed. Several times a day, it has anti-inflammatory and analgesic effects. ? Old people often wash their throat with light salt water to prevent respiratory tract infection. Drinking a cup of salt and boiled water before singing can avoid dry throat.

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Traditional Chinese medicine believes that salt has the functions of clearing heat, cooling blood and detoxifying. According to "Compendium of Materia Medica", salt can "harmonize viscera, eliminate lodging and make people strong". Drinking a glass of light salt water on an empty stomach after getting up in the morning is conducive to reducing fire and benefiting the kidney, keeping the stool unobstructed and improving the digestion and absorption function of the stomach.