What things need to be noted when swimming?
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1. Swimming must be done under the supervision of a parent (guardian). Swimming alone is the most likely to lead to problems; if your companion is not an adult, it’s difficult to ensure that you will receive proper assistance in case of an emergency. (Not suitable for children) 2. People who are sick should not swim. Patients suffering from chronic diseases such as otitis media, heart disease, skin diseases, liver and kidney disorders, high blood pressure, epilepsy, conjunctivitis, as well as those experiencing colds, fever, fatigue, or weakness, should not swim. For these individuals, engaging in swimming not only tends to worsen their condition but also increases the risk of cramps and sudden loss of consciousness, which can be life-threatening. Patients with infectious diseases are prone to transmitting the disease to others. Also, female students should not swim during their menstrual period. 3. After engaging in physical labor or intense exercise, one should not dive into the water to swim immediately, especially when sweating profusely and feeling hot all over; doing so can easily lead to cramps, colds, and other problems. 4. Swimming is not recommended when suffering from a cold, illness, feeling unwell or weak, after eating, on an empty stomach, or after drinking alcohol. 5. Swimming is not recommended in polluted (poor water quality) rivers and reservoirs, areas with rapid currents, the confluence of two rivers, as well as rivers and lakes with significant height differences. Generally speaking, it is not advisable to swim in rivers and lakes with unclear water conditions. Swimming is also not advisable in bad weather such as thunderstorms, strong winds, and sudden weather changes. 6. It’s best to test the water temperature before entering it; if the water is too cold or too hot, try not to rush in. The water temperature in a pool affects blood circulation, the heart, blood pressure, respiration, metabolism, as well as the human skin and muscles. 7. Before entering the water, perform warm-up exercises on the shore for 10 to 15 minutes to stretch the joints and muscles in various parts of the body. Otherwise, engaging in sudden intense activities can easily lead to muscle injuries or other accidents. Leg exercises such as lifting the legs high and squatting then standing up can be used. 8. Do not dive to avoid direct impact of the water surface on the abdomen and testicles. 9. When swimming, it is important to protect your eyes, prevent sunburn, and pay attention to the tide times. 10. After swimming, rinse the whole body with clean water to avoid contracting diseases.
11. After swimming, one can restore energy through methods such as consuming sports drinks, engaging in relaxation exercises, regulating breathing, using hypnotherapy, practicing psychological adjustment, receiving massages, and swimming leisurely in water. 12. Potential risks include leg cramps, dizziness, headache, nausea, vomiting, chest tightness, ear pain, tinnitus, abdominal pain, bloating, and itchy or painful eyes. 13. Common diseases include conjunctivitis, otitis media, sinusitis, pharyngitis, contact dermatitis, allergic dermatitis, and aspiration pneumonia. 14. Avoid prolonged exposure to the sun while swimming; prolonged exposure can lead to sunspots or cause acute dermatitis, also known as sunburn. To prevent sunspots, it is best to use an umbrella for shade once you reach land, rest in a shaded area, cover your skin with a bath towel, or apply sunscreen to exposed areas of the body. 15. Avoid swimming without warm-up exercises. The water temperature is usually lower than body temperature; therefore, it is necessary to do warm-up exercises before entering the water, otherwise it can easily cause discomfort. 16. Avoid eating immediately after swimming. It is advisable to rest for a while before eating, as otherwise it will suddenly increase the burden on the stomach and intestines, and over time this can lead to gastrointestinal diseases.
17. Avoid staying in cold water for too long. The skin generally goes through three reaction phases in response to cold stimuli. Phase 1: Upon entering water, the skin’s blood vessels constrict due to the cold stimulus, causing the skin color to turn pale. Phase 2: After remaining in water for a certain period of time, blood flow to the skin surface increases; the skin changes from pale to light red, and the skin becomes warmer. Phase 3: Prolonged stay leads to more heat loss than heat production; the skin develops goosebumps and shivering occurs. This is a prohibited period for summer swimming; one should exit the water promptly. The swimming duration should generally not exceed 1.5 to 2 hours. 18. Avoid swimming before or after meals. Swimming on an empty stomach can affect appetite and digestive function, and it may also lead to issues such as dizziness and fatigue during swimming. Swimming while full can likewise impair digestive function, causing stomach cramps, vomiting, and abdominal pain. 19. Avoid swimming in unfamiliar waters. When swimming in natural bodies of water, one should never rush into the water without caution. Swimming is not advisable in waters with complex conditions around and underwater to avoid accidents. 20. Avoid swimming on an empty stomach. Many swimmers experience a feeling of hunger and fatigue after getting out of the water; this is because swimming is a physically demanding sport that involves extensive movement of the muscles in the limbs, thereby consuming a large amount of energy and calories in the body. If we swim on an empty stomach, it can cause low blood sugar levels in the body; especially for people with diabetes, the risk of experiencing hypoglycemic coma is even greater. If swimmers are fasting, have low blood sugar levels, and experience high physical exertion, they are particularly prone to muscle tremors, dizziness, exhaustion, loss of consciousness in the water, and may even drown. Therefore, swimmers should consume some foods such as fruits, milk, and candies before swimming, before getting into the water. 21. Avoid swimming during menstruation. Girls who are on their period should definitely refrain from swimming at this time, as during menstruation, germs can easily enter the uterus, fallopian tubes, and other areas through water, causing infections that may lead to irregular menstrual cycles, excessive bleeding, or prolonged periods.
There are too many people in the swimming pool; I’m not going:lol:lol