On March 18 episode of SBS' variety show 'My Little Old Boy', Kim Jong-kook was seen going to the gym to workout.
When Kim Jong-kook's mother saw him going to the gym, she said, "He started working out due to his back problem, but now, he is just totally addicted to working out."
At the gym, the singer did an intense workout for a long time, lifting a 50kg of weight only by one hand and even lifting 170kg of weights with both hands.


When everyone on the show found out these were simply parts of Kim Jong-kook's daily workout routine, they could not repress their astonishment.
On this day, Wanna One's Hwang Min Hyun and Ha Sung Woon visited Kim Jong-kook's gym.
Kim Jong-kook gave some advice regarding what they should do to ease the pain when lifting weights, and he also taught them some of his workout routines.






(Lee Narin, Credit= SBS My Little Old Boy)
(SBS Star)