Every summer, people sweat more. Adults can perspire about 1000 ml per day, while teenagers perspire a little less, and the amount of perspiration is several times larger during strenuous exercise. Sweating more, water and salt are consumed. If you don't supplement it in time, it will cause water and salt metabolism disorder, and you will feel general weakness, loss of appetite, nausea, vomiting, dizziness, and even unconsciousness, pale face and limb cramps in severe cases. Medically, it is called "heat spasm" disease. When sweating for a long time, put some salt when drinking cold boiled water (generally 10 kg boiled water contains about 20 grams of salt), or it is also beneficial to drink more vegetable soup when eating.
Second, drink more boiled water and less juice.
Many primary and middle school students like to drink juice drinks with high sugar content, and sweet drinks, like sweets such as chocolate, affect people's appetite to a considerable extent. Causing loss of appetite. The nerve centers that control eating in the human brain are feeding center and satiety center. When people eat, the content of sugar in the blood increases, and this information is transmitted to the feeding center to promote its inhibition, while the satiety center is excited, which makes people feel full and stop eating. On the contrary, after food is digested, the stomach empties and the blood content decreases, which will lead to the inhibition of satiety center and the excitement of feeding center, so people begin to feel hungry and show a relatively strong appetite. If you drink a lot of fruit juice drinks with high sugar content every day, it will inevitably lead to an increase in the sugar content in the blood, which will lead to a decrease in appetite and even anorexia, resulting in insufficient nutrition supply; In addition, it is reported that a long-term high-sugar diet may lead to diabetes.