What are the benefits of swimming for girls?

In the hot summer, many people like to go swimming in the swimming pool. Swimming has many benefits for the human body. In some European and American countries, there are many people who swim regularly even in the cold winter. Regular swimming can not only enhance the body's resistance, but also has a good weight loss effect. It is very beneficial to strengthen the myocardial function and lung function. Let me introduce to you in detail the benefits of swimming for girls!

1. Enhance myocardial function

When people exercise in water, all organs are involved, which consumes a lot of energy and speeds up blood circulation to supply more nutrients to the exercise organs. The increased blood velocity increases the load on the heart, causing it to beat faster and contract more forcefully. People who swim regularly have excellent heart function. The average person's heart rate is 70-80 beats per minute, and the stroke volume is 60-80 ml. People who swim regularly can have a heart rate of 50-55 beats per minute. Many excellent swimmers can have a heart rate of 38-46 beats per minute, with a stroke volume of 90-120 ml. When swimming, the action of water makes it easier for blood from the limbs to flow back to the heart, increasing the heart rate. Long-term swimming will significantly increase the motility of the heart, make the contraction stronger, increase the thickness and elasticity of the blood vessel walls, and increase the blood output per stroke. Therefore, swimming can develop a strong heart.

2. Enhance immunity

The water temperature of a swimming pool is usually between 26 and 28 degrees. Soaking in water dissipates heat quickly and consumes a lot of energy. In order to replenish the heat dissipated by the body as quickly as possible to meet the needs of cold and heat balance, the nervous system responds quickly, speeding up the body's metabolism, enhancing the body's ability to adapt to the outside world, and resisting the cold. People who regularly participate in winter swimming are less likely to catch colds due to improved body temperature regulation function. It can also improve the body's endocrine function and increase pituitary gland function, thereby improving resistance and immunity to diseases.

3. Weight loss

When swimming, the body is directly immersed in water. Water not only has great resistance, but also has very good thermal conductivity and dissipates heat quickly, thus consuming more calories. Just like a freshly boiled egg, the cooling speed in the air is much slower than that in cold water. Experiments have shown that the calories consumed by a person running in a standard swimming pool for 20 minutes is equivalent to running at the same speed for 1 hour on land. The calories consumed by staying in 14-degree water for 1 minute are as high as 100 kcal, which is equivalent to the heat dissipated in the air at the same temperature for 1 hour. It can be seen that exercising in water can help many people who want to lose weight achieve twice the result with half the effort. Therefore, swimming is one of the most effective exercises to maintain body shape.

4. Fitness

When swimming, people usually use the buoyancy of water to lie prone or supine in the water, relax and stretch the whole body, so that the body can develop comprehensively, symmetrically and harmoniously, and the muscle lines can be smooth. Exercising in water reduces the impact of the ground on bones during ground exercise, lowers the chance of bone aging and makes bone joints less likely to deform. The resistance of water can increase the intensity of human exercise, but this intensity is different from equipment training on land. It is very gentle, and the intensity of training can be easily controlled within the aerobic range. It will not grow very stiff muscles, and can make the lines of the whole body smooth and beautiful.

5. Strengthen lung function

Breathing mainly relies on the lungs. The strength of lung function is determined by the strength of respiratory muscles. Exercise is one of the effective means to improve and increase lung capacity. It has been determined that when swimming, a person's chest is subjected to a pressure of 12-15 kilograms. In addition, the cold water stimulates the muscles to tighten, making breathing difficult. This forces the person to breathe hard and increase the depth of breathing so that the amount of oxygen inhaled can meet the body's needs. The average person's lung capacity is about 3200 ml, and the respiratory difference (the difference between chest expansion and contraction during maximum inhalation and maximum exhalation) is only 4-8 cm. The maximum oxygen uptake during strenuous exercise is 2.5-3 liters/minute, which is 10 times greater than that at rest. The lung capacity of swimmers can be as high as 4000-7000 ml, and the respiratory difference is 12-15 cm. The maximum oxygen uptake during strenuous exercise is 4.5-7.5 liters/minute, which is 20 times greater than that at rest. Swimming promotes the development of respiratory muscles, increases chest circumference, and lung capacity. It also opens more alveoli during inhalation, allowing for smoother ventilation, which is extremely beneficial to health.

6. Skin care

When people swim, the water washes the skin, sweat glands, and sebaceous glands, which has a good massage effect, promotes blood circulation, and makes the skin smooth and elastic. In addition, exercising in water greatly reduces the irritation of the skin caused by the salt in sweat.

All in all, swimming has many benefits for girls, but it should be noted that for safety reasons, they should not go swimming in informal swimming pools. In addition, you must swim according to your physical strength and do not swim for too long. For beginners, it is best to find a professional instructor for guidance. It is best not to swim during menstruation.