It has been said that you should drink more water if you have nothing to do. This concept has long been deeply rooted in people's hearts. Extreme extremes meet, and eating too much of anything will have some disadvantages, but water is an important source of our body composition, and if we drink too much, we will be fine. There are also many people who will abide by the health rule of drinking a certain amount of water every day to feel at ease, but in fact, the intake of water varies from person to person. Now, more foreign studies have pointed out that drinking too much water may have a bad influence on the human body. Drinking too much water will lead to the risk of swallowing difficulties! I'm not thirsty. Do I have to drink so much water? The research projects of Monash University and Melbourne University in Australia were recently published in the Proceedings of the National Academy of Sciences. Their research results have subverted our existing concept of drinking water. In order to maintain proper water in the body, when the human body ingests too much, the brain will produce rejection, which may cause swallowing disorder and affect normal eating in life. Studies by Monash University and Melbourne University show that drinking water after exercise or other labor is three times more demanding than drinking water when you are full and not thirsty at all! In addition, functional magnetic resonance imaging (fMRI) imaging shows that when drinking water in the latter state, the activity of the prefrontal cortex, which controls appetite, is more active, which is likely to cause brain nerve abnormalities and may cause swallowing disorders that may cause non-organ damage. Excessive water intake, others may cause hyponatremia, convulsion, lethargy and even serious death. Michael Ferry, a professor at Monash University, who is in charge of one of the research projects, points out that there are also cases where marathon runners listen to the instructions around them and drink far more water than they need. After this study, he called on everyone to drink different amounts of water every day, which may change with weight and age, so it is necessary to drink a certain amount of water every day instead of being tough. How much water should I drink? So how much water should I drink every day? In addition to making adjustments according to your own situation, just like the daily intake of calories, the following three different factors allow you to calculate your daily drinking reference value. 1. Age and weight Mayo Hospital in the United States is also one of the most famous medical institutions in the world. It puts forward the following simple methods, which can calculate the daily water demand according to age and weight, and multiply the weight (kg) by the following figures according to different age groups. It is your proper drinking water (ml). Under 30 years old: weight (kg) × 40 = recommended drinking water (ml). 30 ~ 55 years old: weight (kg) × 35 = recommended drinking water quantity (ml). Over 56 years old: × weight (kg) 30 = recommended drinking water (ml). 2. People who exercise regularly. According to the recommendation of the American Sports Medicine Association, it is best to increase the amount of drinking water by 350 ml after 30 minutes of exercise. Of course, the Ministry of Health and Welfare also reminds that healthy adults should drink no more than 3,500 ml of water a day. Our eating habits will also affect the amount of water we should replenish every day. For example, eating some foods with high water content but actually diuretic effect (such as Chinese cabbage, coffee and other drinks) can help the body discharge old waste and accumulate water, but it is still necessary to supplement the right amount of water. When we eat too much salt, the body will consume water, feel thirsty easily and raise blood pressure to maintain the balance of ingredients. At this time, in addition to drinking more water, we should also start to control the adjustment of diet and taste.