Exercise is one of the major factors why people grow and maintain health. If both time and space increase, more people would be encouraged to go out and exercise. Extra space will establish a comfortable environment where people can feel free to play the kind of sports they want. Furthermore, with a certain amount of exercise everyday, children can grow up, men and women can get in shape, and the older people can develop stronger bones. Not only will exercise bring a healthy body to everyone, it will also bring happiness. More and more people realize that as they grow older, they will be more grateful to have a healthy body because it is one of the most valuable things that a person can have in life.