Jung Chae Yeon talked about being heavier.
During 'Hello Counselor', she listened to a situation between a woman and her little sister. The woman was worried about her younger sister, who had 0 self-confidence. After she listened to the story, Jung Chae Yeon said, "I was really heavy during middle school. I was around 61kg (135 lb) and at max I was 65 kg (143 lb). One day, one female sunbae passed by and said, 'Wow, she's really big'. I was wearing a cardigan to hide it." She further revealed that she felt intimidated after that.
If only that sunbae could see her now!