Swimming is good for shaping. When swimming, people usually use the buoyancy of water to lie prone or supine in the water, so that the whole body can be relaxed and stretched, so that the body can develop comprehensively, symmetrically and harmoniously, and the muscle lines can be smooth.

Extended data:

The healthy value of swimming:

1, increase vital capacity

Breathing mainly depends on the lungs, and the strength of lung function is determined by the strength of respiratory muscle function. Exercise is one of the effective means to improve and increase vital capacity. According to the measurement, when swimming, people's chest is under the pressure of 12- 15 kg. Cold water stimulates muscle contraction, making it difficult to breathe, forcing people to breathe hard, increasing the depth of breathing, and making the amount of oxygen inhaled meet the needs of the body.

2. Improve the thermoregulation mechanism.

Because the temperature of water is generally lower than that of air, and the thermal conductivity of water is dozens of times stronger than that of air, people dissipate heat much faster in water than in air. Regular swimming can improve the ability of body temperature regulation, so as to be more able to withstand the changes of external temperature. Especially in winter swimming, this improvement is particularly obvious.

3, strengthen skin blood circulation

In the process of swimming, due to the stimulation of water temperature, the body in order to ensure adequate temperature. Skin blood vessels play an important regulatory role. Stimulation of cold water can make skin blood vessels contract and prevent heat from spreading outward. At the same time, the body will intensify the generation of heat, dilate the blood vessels of the skin and improve the blood supply of the blood vessels of the skin, so that long-term exercise can strengthen the blood circulation of the skin.

Step 4 lose weight

When swimming, the body is directly immersed in water, which not only has great resistance, but also has very good thermal conductivity and fast heat dissipation, so it consumes more heat. Just like a freshly boiled egg, the cooling rate in air is far less than that in cold water.

Experiments show that the heat consumed by people swimming in a standard swimming pool for 20 minutes is equivalent to swimming on land at the same speed 1 hour, and the heat consumed by staying in 100 minutes is as high as 100 kcal, which is equivalent to the heat released by air at the same temperature downstream 1 hour.

5. Increase

Swimming can make children grow taller during their development.

References:

Baidu encyclopedia swimming