answer: #Person1# asks the secrets of #Person2# looking energetic and happy. #Person2# suggests #Person1# doing exercises like jogging, doing aerobics, and so on and reminds #Person1# to do some stretches first.
documents: #Person1#: I don't understand why you always look so happy, so energetic. It seems like you'Ve got good news everyday.
  #Person2#: Really? Do I look happy all the time?
  #Person1#: All I know is you look quite differently from other teachers.
  #Person2#: Oh, do you know why? Actually, it's easy. Because I always exercise. My exercise, I think, is very hard. I often feel very good after conquering these difficulties. I feel alive!
  #Person1#: Oh, I know. I saw you doing pull-ups one time on the campus and some students trying to imitate you.
  #Person2#: Yeah, they are doing it for fun. Seldom would people like my exercise. It's difficult and boring.
  #Person1#: It's true. Many students do the exercise when they have to. We have P. E. once a week.
  #Person2#: But I think Chinese students need to exercise more. Besides exercise will help them learn new things better. Don't students want to have a good memory?
  #Person1#: Of course. I didn't know that. I only know exercise makes bodies stronger. I should take some exercise then. Do you have any suggestions?
  #Person2#: Well, do what you like to do. It can be anything. Jogging, doing aerobics, going bicycling, and playing ping-pong. Absolutely anything. Doing three or more workouts a week is good for you. But remember to do some stretches first.
  #Person1#: Oh, I know. Thank you.