What should you pay attention to when swimming in the morning?

Many people like swimming in the summer. Going to the swimming pool or soaking in the sea on a hot summer day is a great enjoyment. But some people like to swim in the morning. Generally, there are many things you need to pay attention to when swimming in the morning, otherwise it is easy to cause physical discomfort. Here are some relevant knowledge points.

There are some rules for eating before a morning swim

For those who love morning swimming, eating in the morning is a difficult problem. On the one hand, an empty stomach before swimming without eating will cause excessive stomach acid to irritate the gastric mucosa. On the other hand, if you eat and go into the water immediately, a large amount of blood will enter the stomach to help digestion, and swimming requires speeding up blood circulation to supply the limbs, thus dispersing the amount of blood entering the stomach.

How to resolve this contradiction? In an interview, Dr. Cheng Shumei suggested that you might try dividing your breakfast into two portions to avoid possible digestive problems. Eat a piece of bread and some dried fruit before exercise, and eat the rest afterward. "It is recommended not to drink dairy products, because they are difficult to digest and are a burden in the stomach. Eating bananas is a good way to quickly replenish energy, but it depends on whether you can adapt to it and whether you will have diarrhea. In the morning, you can eat some bread, not too much, just one or two slices, eat a banana, and drink some pure fruit juice. The rule is not to feel full. From a medical point of view, low blood sugar in the morning is not suitable for high-intensity exercise. Drinking some sugary drinks on an empty stomach can raise blood sugar and is good for improving physical fitness."

Three "don'ts" after swimming

After swimming, you should pay attention to the following points, otherwise it will cause some harm to your body.

1. Don’t take a shower immediately: Your body has not yet returned to normal after exercise, so it is not advisable to take a shower immediately, especially a hot shower. If you take a cold shower immediately after swimming, your skin will be suddenly irritated, causing your blood vessels to contract immediately, increasing blood circulation resistance and reducing your body's resistance. Taking a hot bath will continue to increase blood flow in the skin, leading to insufficient blood supply to the heart and brain. In mild cases, it may cause dizziness, and in severe cases, it may cause collapse and shock.

2. Don’t drink excessively to quench your thirst: Drinking a lot of water will increase the burden on the gastrointestinal tract and dilute the gastric juice, which will not only reduce the bactericidal effect of the gastric juice, but also affect the digestion of food. However, drinking water too quickly will suddenly increase the burden on the heart and may even cause heart failure, chest tightness, abdominal distension, etc.

3. Don’t smoke: The human body’s metabolism speeds up after exercise. If you smoke, a large amount of smoke will enter the body. The body’s need for a large amount of oxygen after exercise cannot be met, making it more susceptible to damage from carbon monoxide, nicotine, etc. At the same time, lack of oxygen in the body will also affect physical recovery after exercise, making people feel more tired.

The above are the things you should pay attention to when swimming in the morning, but it is generally not recommended to swim in the morning because the sea water is still quite freezing in the morning, and there is still a lot of cold even in summer.