Park Jung-ah confesses, "During my Jewelry days, I was 168cm tall and weighed 55kg... I managed my weight aiming for the 40kg range."

Park Jung-ah and Lee Ji-hyun revealed their experiences from their Jewelry days on the YouTube channel ’Hyunsaeng Mode Queen Jihyun’. Park Jung-ah shared an anecdote about how, as the former leader of Jewelry, she conveyed the members’ complaints to the company and worked to alleviate them. She mentioned the difficulties Lee Ji-hyun faced during her activities, saying, ″It felt like she was being pushed around by people.″ The two also talked about weight management during their trainee days. Park Jung-ah revealed that the agency head made them wear tank tops and tight pants and weighed them once a week during their trainee period. She disclosed her weight at the time was ″168 cm and 55 kg,″ and said she reduced her weight to 49 kg and even 48 kg during activities. Park Jung-ah added, ″I struggled to lose the stubborn fat that just wouldn’t go away.″ They continued reminiscing about their busy schedules during their time with Jewelry. Park Jung-ah described their routine of traveling across the country to places like Seoul, Daegu, Masan, Busan, and Haenam, explaining that they often slept in the car while on the move and then went straight on stage. She said they carried a red flashing light in the car and, when in a hurry, opened the window and waved a light stick while traveling. In particular, Park Jung-ah shared a story about a near broadcast cancellation crisis while traveling from Daegu to Masan. She said, ″We really smelled the tire burning as we went,″ and arrived at the site 15 minutes later than scheduled. Recalling the moment when the manager sat down beside the tire, she said, ″If we had been 5 minutes later, it would have been a flat tire.″ Park Jung-ah conveyed the tense moment by saying, ″Nothing is more important than a person’s life.″