[tweet https://twitter.com/nae1004/status/518016991777394688]

[Trans] You are the strongest (Choikang)~~
You are the biggest senior,but “congrats” on joining as the youngest
The bright facial expression before starting exercises
& the tired facial expression after exercisingㅋㅋ

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About Nae Jongseok:

According to a Ryeowook fan,Nae Jong Seok is the trainer who created Ryeowook’s 6-pack [cr:@ymamylim via @mug_ping]

[tweet https://twitter.com/mug_ping/status/518086123038724096]

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Credits:

내종석 Nae Jongseok’s twitter ( @nae1004),
Translated by @mug_ping: 1 & 2
Shared by TVXQ! Express