On August 17th's episode of SBS's Strong Heart, 2AM's maknae Jinwoon revealed a hair problem he has been bothered with. During the show, he surprisingly revealed, "To be honest, I have no armpit hair." He continued, "People my age should start having an amazon, like a forest in Seoul under their armpit, but I don't have it. When people see my armpit, they ask where I got my epilation from." MC Kang Ho Dong then replied, "Is it the same for your whole body?" Jinwoon answered, "It's only my armpit hair. I have a lot of hair on my legs and I can also grow a mustache." 2PM's Junho, who also made an appearance, added, "He doesn't have armpit hair, but he has this weird hair on his elbow." Jinwoon then explained, "When I was in middle school, I started growing this long hair on my elbow. I once plucked it out, then later I separated with my girlfriend who I was dating. When another hair grew on my elbow, I plucked it out again which resulted in me being cut as a member of an artist group. ... I then concluded that the hair growing on my elbow was a jinx. Ever since the incident, I did not pluck it but only trimmed it with a scissor."