answer: #Person2#'s been pink recently because #Person2# takes an aerobic class regularly.
documents: #Person1#: You are in the pink recently. How do you make it?
  #Person2#: Well, I attend an aerobic class three times a week.
  #Person1#: Are you tired after class?
  #Person2#: No. And on the contrary, I feel young, fresh and energetic.