The effects of exercise on our healthfirst,i want to tell the benefit of excerise.it's good for our health.everyday ,after work ,we need to free ourself ,and we have ate so many food,so do some exerise is a good choice.second,there are some disadvantages in doing exercise.it may cost us a lot of time and sometimes when do exercise we may bring ourselves into troble.for example ,we may get hurt if we do excercise too much than our body can stand.in a word,everything include exercise have two sides.we should do what we can .so we should do exercise normally and don't do it for long .