What temperature of water is best for quenching thirst?
On a scorching summer day, you can sweat profusely even without any activity. In such situations, many people tend to gulp down cold water or iced drinks, thinking it's the most refreshing and effective way to quench thirst. In reality, when you are sweating heavily and feeling very thirsty, drinking cold water or iced drinks without a second thought will only make you thirstier. It causes reflexive sweating, leading to more fluid loss in the body, which is extremely harmful to your health.
Excessive sweating can also lead to a salt deficiency in the body, causing heat cramps that can be life-threatening.
The correct approach is to develop the habit of drinking warm water and try to avoid or minimize the consumption of cold water or iced drinks.
According to scientific research, an infrared thermal camera was used to measure the skin temperature of two volunteers in a hot climate—one drinking a warm beverage and the other a cold one. The results showed that the warm drink lowered skin temperature by 1°C to 2°C, while the cold drink only cooled the area around the mouth. Furthermore, the two groups reported different sensations. The person who drank the warm beverage felt cool and comfortable, with their thirst completely quenched. In contrast, the person who drank the cold beverage felt generally unwell, and their thirst returned soon after.
Molecules of warm water, which are close to body temperature, can be quickly and orderly absorbed into the intestinal wall, thus quenching thirst effectively. Additionally, drinking a warm beverage can induce slight sweating, which helps dissipate some body heat, making it harmless to the body. Conversely, cold drinks absorb a significant amount of heat from the mouth and stomach. The sudden cold shock to internal organs can, at best, impair digestion, and at worst, cause stomach cramps and diarrhea. Therefore, in the height of summer, warm beverages are the better choice.