Gahyeon, a former member of After School, revealed her diet method after giving birth. On the March 6th broadcast of KBS 2TV's "New Product Launch Pyeonstorang," Gahyeon appeared alongside Yubin, a former member of Wonder Girls, and Sunye. They shared their experiences regarding marriage and childbirth.

Gahyeon asked Sunye about weight gain during pregnancy. Sunye replied, "I only gained 9kg because my morning sickness was so severe." Gahyeon expressed surprise, saying, "You must have been really skinny." Sunye added, "It was almost just my belly that was showing."

Gahyeon shared her own pregnancy experience. She said, "I gained 18kg during pregnancy, but I didn't have any morning sickness at all." When Sunye asked, "How long did it take for your body to return to normal?" Gahyeon answered, "Three months." She explained her dieting process, saying, "After giving birth, my belly should have gone down, but it didn't. That shocked me."

Gahyeon revealed, "I breastfed for three months, then cut out carbohydrates and exercised intensely for six months." Because of this, she was able to return to her original weight in a short time after giving birth.

Yubin said she thought it was amazing that Sunye gave birth at home. Sunye said, "I gave birth to all three of my daughters at home in Canada. It was unfamiliar and scary to have my first childbirth in a foreign country. The hospital felt unfamiliar, so home seemed more comfortable." She added, "It seemed too hard to give birth and then pack up and move. There, the system with midwives is well established, so I trusted it."

Gahyeon married in 2016 and has two sons. She shared her postnatal experiences, informing many about the difficulties of dieting and the efforts involved in the process. The broadcast received great attention from viewers due to their honest conversations and stories.