Drink an appropriate amount of lightly salted water
Drinking some lightly salted water during your trip can replenish the inorganic salts lost through excessive sweating. The simplest method is to add 1 gram of salt to 500 milliliters of drinking water and consume it at suitable intervals. This not only meets the body's needs but also helps prevent electrolyte imbalance.
Drink water in small amounts at frequent intervals
Many people habitually decide whether to drink water based on thirst, but this is unscientific. Thirst is actually an important signal that the body's water balance is already off. During travel, avoid drinking large amounts of water at once; instead, sip small quantities multiple times to aid absorption. The ideal approach is to drink 100 to 150 milliliters of water at a time, with intervals of about half an hour.
Avoid very cold water
Try to avoid drinking water that is too cold, and don’t indulge in gulping down cold beverages for momentary relief. During physical activities in summer travel, the body’s temperature is usually higher, and consuming large amounts of cold drinks can easily lead to digestive system issues. While traveling, the body generates significant heat, causing internal organs to be much warmer than usual. Drinking large quantities of cold beverages at this time can cause sudden contraction of the throat, esophagus, and stomach, leading to discomfort, commonly known as "lung shock." Experts recommend that travelers avoid drinks below 5°C, and it’s more scientific to drink lightly salted water around 10°C. This helps cool down and quench thirst without harming the stomach, while also replenishing the body’s needed salts in a timely manner.