Boiled water cooled to room temperature is very beneficial to human health. It not only moistens the throat, refreshes the mind, prevents bad breath and constipation, but also has a certain therapeutic effect on pharyngitis. A glass of boiled water cooled to room temperature in the morning can clear the stomach, detoxify the body, and promote longevity.
Boiled water refers to water that has been boiled and then allowed to cool naturally to a temperature of 20°C–25°C. Research has found that after boiled water cools naturally, the chlorine content in the water is 50% lower than that in regular water.
For the elderly, boiled water cooled to room temperature is the best beverage. Pour boiled tap water into a clean, covered container and let it cool to 20–25°C before drinking. Drinking a glass of it on an empty stomach after waking up every day not only prevents colds but also enhances the liver's detoxification ability and the digestive tract's excretion capacity, promotes metabolism, and helps lower blood pressure and prevent myocardial infarction.
The temperature of the water should be adjusted according to the specific situation; in winter, drink warm water to warm the stomach, while in summer, it can be slightly cooler to relieve summer heat. Boiled water cooled to room temperature should not be stored for too long, preferably not exceeding 24 hours. If left for too long, the water will not only be contaminated by bacteria in the air but will also lose its "activity" as gases re-dissolve into it. The source water for boiled water must be clean. Re-boiled leftover water, water used to steam food, and water that has been boiled for a long time should not be consumed.
Although boiled water cooled to room temperature is good for you, it should be consumed in moderation. Generally, it is advisable to drink 1.5–2 liters of water per day. Drinking too little water is not good, but excessive water intake can also lead to poisoning. People who are very active and sweat a lot lose electrolytes in their bodies. Drinking a large amount of water immediately after exercise can lead to muscle cramps. Therefore, after a workout, you can drink a little salted boiled water.