✔ 最佳答案
Most of the teen want to keep fit, because they want to have a petty body. But some of the teen, they have good body not need to keep fit so they were have a bad body at last. Most of the teen are fat, so they want to keep fit. That is good, but their method is wrong. Because they do excessive sport and be moderate in eating . This is bad method because they will sick and have a bad body. In more country use the bad method to keep fit is 60%, use the good method to keep fit only is 40%. That is a very big problem.