Read the following conversation and answer the question.

M: Now some doctors are strongly encouraging arm exercises.

W: Arm exercises? Is that because arms are too fat or too soft?

M: Actually that's not the main reason. They say that arm exercises can make you physically healthy.

W: But I was told that arm exercises could raise your blood pressure.

M: Yes, but the article I read suggests some ways to make up for that.

W: Really? How?

M: By adding leg exercises, so that the arms don't do all the work.

W: And in return, I'm sure that there's a good chance of losing weight.

M: Sounds right to me.

W: So what exercises do the experts suggest?

M: They mentioned quite a few exercises, but one of the most popular ones is cycling.

W: Good, I must try that.

Question: Why are some experts strongly encouraging arm exercises? 

- Because our arms are often too fat.

- Because our arms are often too soft.

- Because arm exercises can build up our health.


Because arm exercises can build up our health.