Directions：For this part，you are alloposition on the topic Body-building. You should position on the outline beloe an indispensable part of many people’s life.
Why are so many people keen on body-building?Firstly，keeping health is one of their main purposes. In modern ociety，many people stay for most of the day before the desk e to realize the potential danger of their working pattern. Secondly，body-building is beneficial for people to keep their body shape. Many setting-up exercises like aerobics are very helpful in cutting up weight. Besides，body-building is a good way by which people can release pressure.
As far as I am concerned，the popularity of body-building will be a long-time trend. It shows people begin to pay more and more attention to life quality. As a fashionable，healthy lifestyle，body-building will attract more and more people.