First, body. Most physical indicators are congenital conditions, specifically: shoulder hip breadth ratio, hand and arm to height ratio, sole area to body cross-sectional area ratio. To put it simply, being tall, with long arms and legs and big hands and feet naturally has advantages.

Second, cardiopulmonary function. Mainly refers to vital capacity. Good heart and lung function, large lung capacity, swimming, breathing, breathing have advantages, especially long distance. This can be strengthened by exercise the day after tomorrow, and swimming itself can also exercise cardiopulmonary function.

Third, strength. Long-distance swimming requires higher cardiopulmonary function, while short-distance swimming pays more attention to strength. The stroke is weak, the kick is weak, and the natural speed cannot be raised. Strength can be strengthened by training the day after tomorrow, especially on land.

Fourth, flexibility. Swimming mainly needs the flexibility of ankle joint and shoulder joint. Flexibility exercises also need to be improved to match land exercises. Persisting in flexibility training is conducive to the improvement of swimming skills. After the flexibility is improved, the swimming technical movements can be refined and the speed can be improved without increasing the strength.

Fifth, the feeling of water. Basically, as a swimmer, a good sense of water is the most basic quality.

6. Brain: Training can teach your brain many things. You learn various skills, such as rhythm, balance and coordination. You learn to complete all kinds of skills, exercises and techniques. Your brain is like a personal computer. It has the ability to accomplish all kinds of extraordinary things, but it needs some kind of program to make it run. Training is like a program you enter into a computer, which allows you to read, write, record information and so on. The brain is like a computer. If you enter the wrong information, you will get the wrong result.

Things to bring when swimming:

1, swimsuit and swimming trunks;

2, goggles (swimming pool water is not clean, no conjunctivitis);

3, swimming cap (no swimming cap, no swimming, afraid of losing hair, cleaning the swimming pool);

4. Newspapers/plastic bags (the newspapers are put in the suitcase, and the changed clothes and articles should not be put directly in the suitcase or plastic bags);

5, towels, soap (you must take a bath after swimming, wash your swimsuit, bleach hurts your skin and hurts your swimsuit);

6, shampoo, mouthwash (wash your hair with shampoo and mouthwash because you have to brush your teeth after swimming, or rinse your mouth with water);

7. Water (drink water after exercise);

8. Swimming rings and paddles (swimming rings and paddles are needed if you can't swim and learn to swim);

9, nose clips, earplugs (can prevent water from entering the nose and ears when swimming).

Matters needing attention

Don't swim alone

Don't go swimming alone, especially under the supervision of adults.

Swimming is not suitable before and after meals.

Swimming before meals will make you feel weak and prone to collapse. Swimming with a full stomach after a meal is easy to cause vomiting. It is best to go swimming 2 hours after dinner.

Bring a swimming ring.

For places with deep water, or people who can't swim well, you should bring swimming ring AIDS. When you are tired from swimming, you can rest with them, which is also a life-saving tool.

Swimming time should not be too long.

If you soak in water for too long, you will feel very uncomfortable. So the swimming time should not be too long, preferably within 2 hours.

Don't swim during menstruation.

For women, the physical resistance during menstruation is poor, and swimming will allow bacteria to enter the body, causing infection. Therefore, female friends should not swim during menstruation.

Don't swim in strange waters.

Unfamiliar waters, such as wild reservoirs, lakes and unfamiliar rivers. In unfamiliar waters, we don't know the depth of clear water, the distribution of underwater stones and weeds. Inadvertently entering the water will increase the probability of drowning accidents.

People with diseases should not swim.

People suffering from heart disease, hypertension, tuberculosis, otitis media, dermatosis, severe trachoma and various infectious diseases are not suitable for swimming. Be responsible for yourself and others.