Jinny: Excuse me, are you Sam?
Sam: Yes I am. Do we know each other?
Jinny: I'm Jinny, your classmate in Junior High School.
Sam: Oh yeah, I remember. How are you?
Jinny: I am pretty good, how about you? You look different now......
Sam: I am good too. Yeah, thank you. I am a MMA fighter now, so I exercise regularly.
What is the best compliment to fill in the blank in the conversation above?