陈小宁的博客

茶香不飘运动场

喝茶是很多人平日的习惯，也是养生之道之一。中国的茶文化也从制茶到饮茶成为中国文化的一部分，开门七件事柴米油盐酱醋茶的最后一项还是茶，说明其在生活中的作用，不仅是缺其不可，更为重中之重。清香、恬静、清脑、醒目就是品茶的感觉，而能与友人坐在一起品茶，一壶清茶也能造就一段历史回顾，更有新生事物的诞生的可能，一切都在茶文化中回旋、荡漾。

然而，茶水并非水，对于人体的基本需要还是有一点差别，特别是在剧烈运动之后。倒不是我突发奇想，而是，我自身遇到麻烦，之后从ChatGPT查到相关资料，我所提的问题是：运动后能喝茶解渴吗？答案是：运动后不建议马上喝茶解渴，虽然茶含有一定水分，但茶中的咖啡因可能具有利尿作用，导致身体拍出更多水分，从而加重脱水的风险。尤其是浓茶，可能刺激神经系统，增加心跳速度，给心脏带来额外负担。

亲身经历的事实是这样的，清晨五点多起床，因为和朋友约好了在郊区室内打网球。吃早饭比较简单，之后乘地铁前往球场。因为是单打，比较激烈，出汗不少，之后清洗整理再乘地铁返回，途中喝了一瓶水，补水解渴。中午有饭局，需乘地铁向另一方向，去地铁站之前又拐到朋友家喝茶，清香的花茶诱人，喝了两杯后启程。在到达目的地之前总有上厕所小便的感觉。此时一切正常，除了解手。

就在坐定点菜时，肚子一阵剧痛，再次去厕所后并没有任何缓解，反而肚子不适加重，而且开始出虚汗，最后要求店家找个地方让我躺下来，经过一段时间还是感到人越来越虚弱，不得已只好坐上朋友打的车晃晃悠悠回家躺下休息，并且打电话给朋友取消了原订的下午活动。

回到家休息后觉得情况有所缓解，就走到街上的药店买一些东西，顺便咨询一下有关胃不舒服之事，店员很热情，给我量了血压，说我的血压很正常，只是心跳有些快，建议我去医院看急诊，做个心电图，以免有什么其他问题，最好不要是心脏问题。

随着时间的推移症状渐渐消失，晚饭喝了点小米粥还吃了个馒头，再到夜里睡个好觉，第二天就完全恢复正常了。百思不得其解，最后在ChatGPT上查到结果，运动后不建议喝茶，因为喝茶不光不会补充水分，反而因为利尿的作用让水分流失更多，同时引起心跳加快。

回想之前的一天，也同样是在打了一小时网球后到朋友家喝了茶，茶是非常好的花茶，可是有越喝越渴的感觉，之后也曾有过胃不舒服的感觉，因为离厕所近，去的次数也多。不过，好在很快就吃饭了，不光停止了喝茶，还补充了其他食物和饮料，缓解了胃的不适。

这样看来，运动后，特别是比较剧烈的运动之后，喝茶补水是一个非常错误的做法，非但没有补充水分，还会使身体更缺水，破坏了身体里的平衡，当到达一定程度，身体的应激反应使得心跳加剧，此时，除了休息和快速补充水分别无他法。

人的身体有着复杂和合理的结构，其中水所占的比例超过身体重量的一半，通常说起来有百分之五十至百分之七十之间，因此，水的重要作用也是平衡人体需要所必须的。不论过多或过少都会有一些问题。而身体排水除了排尿以外，出汗也是一种排水的途径，身体里新陈代谢后所产生的废物可以通过排出的水带走，以维持身体健康。

比如身体里的水多了，表面现象看起来可能是腿肿，但是由于身体内的废物不能排除，积攒之后就会变成毒素，酮症就是身体的酸中毒表现。而身体里的水分过少也同样会打破体内的酸碱平衡。对于酸中毒可能要进行血液透析来强制排毒，而另一个极端现象可以通过补水和补充电解质来缓解。

由此简单分析看来，运动后，特别是剧烈运动后是需要及时补充水分的，否则会有麻烦。茶虽然是公认的健康饮料，但是它所含有的咖啡因是有增加排水作用的，在运动之后喝茶对于补水作用是负面的。这与ChatGPT所给出的建议也是吻合的。

生活中的大多数内容都没有绝对的好与坏。就像饮茶一样，也有健身和伤身的不同作用，合理使用才是硬道理。通过这次身体出状况我也学到了更多的知识。

Tea Fragrance Does Not Linger in the Sports Arena

Drinking tea is a daily habit for many people, and it is also considered a path to wellness. China's tea culture, from tea production to drinking, has become an integral part of Chinese life. The saying "seven necessities to open a door: firewood, rice, oil, salt, soy sauce, vinegar, and tea" highlights the importance of tea in daily life. It is not only essential but holds a prominent position. The aroma, serenity, clarity of mind, and alertness are the feelings evoked by tea. Sitting with friends and sharing tea can create moments of historical reflection and even give birth to new ideas, all within the ebb and flow of tea culture.

However, tea is not the same as water. While tea provides some hydration, its effects on the body differ, especially after intense physical activity. This is not just a random thought; rather, it stems from personal experience and later research I conducted with ChatGPT. The question I posed was: Can you drink tea to quench thirst after exercise? The answer was no. Although tea contains water, the caffeine in tea can have a diuretic effect, causing the body to excrete more fluid, increasing the risk of dehydration. This is especially true for strong tea, which may stimulate the nervous system, raise heart rate, and put additional strain on the heart.

Here's what happened to me: I got up at around 5 a.m. one morning, as I had arranged to play tennis with a friend at an indoor court in the suburbs. I had a light breakfast and took the subway to the court. Since we played singles, the match was intense, and I sweated a lot. After washing up and freshening up, I took the subway back, drinking a bottle of water to rehydrate. At noon, I had a lunch appointment and needed to head in the opposite direction by subway. Before going to the station, I stopped by a friend’s house and had two cups of fragrant flower tea. On the way to the lunch location, I had to use the restroom frequently. At that point, everything seemed fine, except for frequent urination.

But when I sat down to order food, a sudden sharp pain hit my stomach. A visit to the restroom brought no relief; instead, the discomfort worsened, and I started breaking out in a cold sweat. Eventually, I had to ask the restaurant staff to find me a place to lie down. Despite resting for a while, I felt increasingly weak, so I reluctantly took a friend’s car home and canceled my afternoon plans.

After resting at home, I felt somewhat better. I went to a pharmacy to buy some medicine and consulted the pharmacist about my stomach discomfort. The pharmacist kindly checked my blood pressure, which was normal, though my heart rate was a bit fast. She advised me to visit the hospital for an ECG to rule out any heart issues. Fortunately, as time passed, my symptoms gradually subsided. I had a light dinner of millet porridge and a steamed bun, and after a good night’s sleep, I was back to normal the next day.

I was puzzled, but eventually, I found the answer through ChatGPT. After exercise, it is not recommended to drink tea because not only does tea fail to replenish fluids, but the diuretic effect of caffeine can lead to further dehydration and increased heart rate. Looking back, on another day, I had a similar experience after playing an hour of tennis and drinking tea at a friend’s house. Although the tea was delicious, I felt increasingly thirsty and experienced mild stomach discomfort, likely due to frequent trips to the restroom. Luckily, since I soon stopped drinking tea and had some food and other drinks, the discomfort subsided.

This shows that drinking tea after exercise, especially intense exercise, is a big mistake. Not only does it fail to rehydrate the body, but it also depletes fluids further, disrupting the body’s balance. Once this reaches a certain point, the body’s stress response can lead to a rapid increase in heart rate, and at that point, rest and rehydration are the only solutions.

The human body is a complex and well-designed system, with water making up more than half of body weight—typically between 50% and 70%. Therefore, water plays a critical role in maintaining the body’s balance. Both excess and insufficient water can cause problems. Besides urination, sweating is another way the body expels water, helping remove metabolic waste and maintain health.

For example, an excess of water in the body may cause visible symptoms like leg swelling, but the real issue is that waste is not being expelled, leading to toxin buildup. Ketoacidosis is one manifestation of this buildup. On the other hand, dehydration can also disrupt the body’s acid-base balance. To treat ketoacidosis, blood dialysis may be required to force the removal of toxins, while the other extreme can be managed by replenishing fluids and electrolytes.

In summary, after exercise—especially intense physical activity—it is crucial to rehydrate promptly, or problems may arise. While tea is widely recognized as a healthy beverage, its caffeine content promotes fluid loss, which is counterproductive after exercise. This aligns with ChatGPT’s advice.

Most things in life are neither absolutely good nor bad. Just like tea, it can either promote health or cause harm, depending on how it’s consumed. This experience has taught me valuable lessons.