The word luck and action contains a cloud. Moreover, when cloud begins to walk, it means luck, and when cloud and force are next to each other, it moves. moving is the natural state of clouds, so sing clouds floating over a hometown in the sky; clouds are always moving, to a certain extent, they burst into power, even if it is sunny in this second, there will be heavy rain the next. Such an explanation is sure to make you laugh, but exercise does build up strength. Exercise for an hour every day, work healthily for 50 years, and live a happy life. The relationship between these three is not only a progressive relationship, but also a causal relationship.
passage?
The significance and function of exercise.