Health Tips for Safe Swimming and Scientific Winter Swimming

Five Precautions for Swimming

Swimming is a popular sport in the hot summer months. It helps prevent heatstroke and improves physical fitness. However, neglecting safety and hygiene can easily lead to danger. Therefore, remember the five precautions for swimming in summer.

Prevent Drowning. Always be aware of the water conditions before swimming. Even skilled swimmers should not swim in unfamiliar waters. Furthermore, learn how to save yourself and others. If you accidentally fall into deep water, quickly assume a supine position with your head tilted back and your mouth and nose above the water to breathe. After a drowning person is rescued, immediately clear any mud or vomit from their mouth and nose. For those who are unconscious and have no carotid pulse, immediately perform mouth-to-mouth resuscitation and chest compressions.

Prevent Cramps. If you experience leg cramps while swimming, do not panic or thrash in the water. Take the following steps immediately: For toe cramps, forcefully pry your toes apart and press downwards with both hands; for calf cramps, hold and massage your calf, stretching your toes towards the instep or forcefully kicking downwards with the affected leg to stop the cramp. Afterwards, immediately get out of the water and warm up your limbs by sunbathing.

Prevent ear infections. To protect your ears, apply a small amount of antibiotic ointment to the external auditory canal before entering the water. This can protect the skin and reduce water immersion. After swimming, dry your ears thoroughly to prevent bacterial growth.

Prevent conjunctivitis. Do not swim in unclean waters. After swimming, wash your face with clean water or wash your eyes with 3% boric acid solution, or use 0.25% chloramphenicol or rifampicin eye drops 4-6 times daily.

Prevent dermatitis. Industrial wastewater and domestic sewage can cause contact dermatitis or allergic dermatitis. After swimming, you should routinely shower with clean water and change clothes. If a rash appears, seek treatment promptly under the guidance of a doctor.

The Benefits of Winter Swimming

Winter swimming refers to swimming in natural waters such as rivers, lakes, and seas, or reservoirs and outdoor swimming pools at natural water temperatures during winter. It is particularly suitable for young men. Winter swimming not only strengthens willpower but also enhances cardiopulmonary function, improves the regulatory capacity of the neuroendocrine system, and boosts the body's immunity, thus promoting health and disease prevention. It can be said that the functions of all tissues and organs in the body can be exercised and improved through winter swimming.

Cellular Immunity: Winter swimming can enhance the body's ability to eliminate abnormal cells and foreign proteins. White blood cells are the "guardians" in the body that eliminate pathogens and large foreign molecules. Researchers compared ear blood samples from winter swimmers before and after swimming and found that their total white blood cell count increased by 30% after swimming.

Humoral Immunity Researchers studying long-time winter swimmers found significant increases in immunoglobulin G, immunoglobulin A, and immunoglobulin M levels.

The cold stimulation of winter swimming also promotes the generation of free radicals in the body, without inhibiting purine metabolism. Under physiological conditions, the generation of free radicals is a defense mechanism. The large-scale generation of free radicals can promote metabolism and contribute to anti-inflammatory and anti-aging effects.

Long-time winter swimmers can improve the oxygen-carrying capacity of red blood cells, enhance metabolism, accelerate the excretion of catabolism products, and clear the large amounts of free radicals and reactive oxygen species generated due to stress responses.

While winter swimming offers many benefits, it's crucial to approach it scientifically. The purpose of winter swimming is fitness and recreation, not pushing limits. It should be done gradually and within one's capabilities. Most importantly, it's essential to strictly control the amount and intensity of exercise based on one's own physical condition and feelings to achieve optimal fitness results. Never compare yourself to others, and never overexert yourself.