One thing every human being in the world wants throughout their life is good health. And people realize the need to focus on good health practices only when they are attacked by some health issue or the other.
And maintaining good health is a simple but continuous process. All you need to do is to ensure full blood flow and oxygen flow for every part of your body. That can be achieved through physical exercising or stressful / fast walking or through yoga or through swimming.
Of all these options, Swimming is one of the best physical good health route only because you also enjoy the exercising part every minute.