Watching the swimmers, you can see that he bodies are very calistheniques like, thebody with the shape of as that of the former military. Having broad shoulders and big biceps and triceps, all these are the effect of the repetitive movement of the bodythat swings in the water and the construction of the muscles of the shoulder and arm. It is also beneficial because the distance of the swimming is also making the impact in the legs and the upper leg as she pedals water as a cyclist.
All around the swimming is a good activity that will make you very healthy, becauseit keeps your heart rate, it built also the stamina and good muscle strength and your own cardiovascular fitness. It is do also you maintain your weight which helps youto have a good body mass index. More swim is to get better there is no negative effect only if the water is very clean, it‘s even a better singer.