answer: #Person2# has been doing yoga for a long time because it helps keep fit and have peace of mind.
documents: #Person1#: You look like in perfect condition.
  #Person2#: I go to the gym every day to keep fit.
  #Person1#: Which sports do you participate in?
  #Person2#: I've been doing yoga for a long time.
  #Person1#: Can you tell me something about yoga?
  #Person2#: Yoga is used to promote people's physical, intellectual and mental harmony and healthy.
  #Person1#: How do you feel when you practice yoga?
  #Person2#: Oh, I feel really tired and sweat a lot.
  #Person1#: But it will help you keep fit.
  #Person2#: Sure. But more importantly, I can have peace of mind.