It is good for our health to take exercise.
进行体育锻炼有益于我们的'健康。
We should take exercise to build up resistance to disease.
我们应该坚持锻炼以增强对疾病的抵抗力。
I know I should take exercise, but I never do.
我知道我应该进行体育锻炼，但我从来没这样做过。
If you are planning to do exercise regularly, or you're doing it now, then listen up!
如果你计划定期锻炼,或者你现在正在锻炼,那就听好了！
How often do you exercise?
你多长时间锻炼一次？
It would be a good idea if you could do this exercise twice or three times on separate days.
如果你能将此练习隔几天做上两三次就好了。
