You're looking very well .   Thank you . I try to keep in shape .   Do you often exercise ?   Yes , as long as I can find the time . I like swimming best .   What style of swimming do you like best ?   I like the back best . I am good at freestyle stroke , but I usually use breast stroke as it keeps me from getting tired .   I think butterfly stroke is the most difficult style to learn .   I agree . I'm not good at it , either . Can you swim ? How about going for a swim this Saturday ? 