On December 22 episode of JTBC's talk show 'Knowing Brothers', EXO was invited to join the talk.

They asked KAI with curious eyes, "You are so fit. Do you ever take a break from working out?"
KAI answered, "I want to maintain the muscles in my body. I regularly work out to maintain them. It's also for my health."

KAI answered, "CHANYEOL has been spending a lot of his time working out these days. I would say it is CHANYEOL."

KAI laughed and answered, "It's you, BAEKHYUN. There is no one else to choose, because you have the worst body out of EXO members, full stop."
In response to this, BAEKHYUN just continuously laughed in embarrassment.

D.O. responded, "I have never worked out like KAI in my life. I do have some fat on my belly."

(Lee Narin, Credit= JTBC Knowing Brothers)
(SBS Star)