On the June 20 episode of JTBC's 'Around the World Travel Package', Highlight's Junhyung, Jung Hyung Don, and Kim Sung Joo shared a room during their trip to Hokkaido, Japan, while Doojoon, Ahn Jung Hwan, and Kim Yong Man grouped up in the other room!
After a good night's sleep, the cast members and guests woke up to the alarms set by the staff, with Junhyung being the first one up in his room. Kim Sung Joo, who opened his eyes next to Junhyung, mentioned sleepily, "Junhyung, you know you grind your teeth?"
Sure enough, according to footage recorded during the night, it was revealed that Junhyung grinding his teeth could be heard all night and into the morning! Kim Sung Joo added, "I lost about an hour or two of sleep [because of that]," while Jung Hyung Don complained, "Ah, an idol grinds his teeth!"