Idol group MBLAQ's G.O. confessed to having suffered from narcolepsy.

MBLAQ and girl group A Pink starred as guests on the April 15th broadcast of cable channel Mnet's "Beatles Code 3D".

On the show MC Shin Dong Yup said, "I heard that G.O. had narcolepsy." G.O. responded, "I'm okay now, but that's how I used to be."

He continued, "When it was really severe, I sometimes fell asleep while singing. And then a few seconds later I would wake up and continue singing where I left off."

Mir also chimed in, saying, "One time G.O. paid for a VOD, but he fell asleep before he could watch the actual video."

G.O. replied, "That's all in the past, and now I'm okay. I was fine once I really made up my mind to pay attention," eliciting laughter.