KNK's Seungjun shared the secret behind his model physique on 'Weekly Idol'!

On the recent episode, the rookie group, well known as a group of tall, model-like members, were asked, "Who is the tallest out of you guys?" Seungjun then raised his hand, and answered, "I am 189cm (6ft 2in)." 

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He also shared the secret to his tall height as he added, "I grew a lot after drinking worm juice."

Time to head out to the store for some worm juice!