Carbonated drinks (soft drinks) refer to drinks filled with carbon dioxide gas under certain conditions. Some carbonated drinks can cause serious damage to human cells. Sodium benzoate, a preservative contained in carbonated drinks, will destroy an important region of human mitochondrial DNA. [ 1]? Carbonated drinks mainly contain acidic substances such as carbonated water and citric acid, sugar and spices, and some also contain caffeine and artificial colors. Except that sugar can replenish energy for human body, aerated "carbonated drinks" contain almost no nutrients. Generally: coke, sprite, soda water. Excessive drinking is harmful to your health.

2. Boiling water

Boiled water, also known as cold boiled water and frozen boiled water, is the most consumed water in daily life. It is tasteless and extremely common, but it has a very important conditioning effect on the physiological mechanism of human body. Drinking a cup of warm water on an empty stomach in the morning is good for your health. For middle-aged and elderly people, it can not only dilute blood, reduce blood viscosity and promote blood circulation, but also reduce the risk of thrombosis and prevent the occurrence of cardiovascular and cerebrovascular diseases at the peak of heart disease. For young people, because the water in the body decreases after sleeping at night, it can quench thirst and diuresis, and also make the skin smooth and tender.

3, light salt water

Light salt water refers to low concentration salt water. The concentration of saline needed by mammals is 0.9%, that of birds is 0.75%, and that of amphibians is 0.65%.