K-pop boy band SHINee member Key appeared on JTBC’s “Take Care Of The Fridge” along with singer Boa and revealed his secret to a slender body.

“There isn’t a diet that I haven’t tried,” commented Key posted Monday to the Korean news website Nate. “Unlike other members of our group, I will probably have to diet for the rest of my life to maintain my figure.”

His fridge contained various low calorie foods and vegetables, revealing his overall health lifestyle.

“Ive stopped eating carbohydrates for the past six months in order to maintain my diet,” he commented as well.

BoA, who also appeared on the show that day showed much surprise and revealed that she could never diet like that.

“Key is probably the idol member that works the hardest to maintain his figure,” she commented posted Monday to the Korean news website Nate.

More on Key’s diet and fridge will be revealed on Monday’s episode of “Take Care of the Fridge.”