Korean actress Jun Ji-hyun attends a press conference for the thriller film “Colony” in Seoul, April 6. Yonhap
Click here for more articles by Kormedi.com.
Actor Jun Ji-hyun is drawing attention for her disciplined self-care routine.
Recently appearing on the YouTube show Channel Fullmoon, Jun shared stories with the cast of the upcoming film “Colony.” Director Yeon Sang-ho mentioned that she often brings vegetables and healthy snacks to the set to share with others. He especially praised her beef jerky, saying that it was unlike any jerky he had ever tasted before.
Her habit of packing her own healthy snacks even while filming quickly became a talking point.
Explaining her routine, Jun said, “If I eat too much while filming, I can’t concentrate well and I get sleepy, so I pay more attention to my diet during shoots.”
She also revealed that she does both personal training and kickboxing. “Kickboxing is great because it pushes you to the point where you feel out of breath,” she said.
Packing healthy snacks
Actor Koo Kyo-hwan shared that Jun carries around a cooler box with celery sticks and jerky to share with the staff.
Celery is known as a low-calorie vegetable rich in dietary fiber, while jerky is a high-protein snack popular among people trying to maintain muscle mass and stay full longer.
In reality, heavy meals — especially those high in refined carbohydrates or sugar — can cause postmeal drowsiness and blood sugar fluctuations. In situations requiring long hours of focus, lighter and more balanced meals may help maintain steady energy and alertness.
Jun’s approach prioritizes physical condition and performance over simply eating less, making it a notable example of disciplined self-management.
Intense fitness routine
Jun said she currently combines personal training with kickboxing.
Kickboxing is considered a full-body workout that uses both the upper and lower body simultaneously, helping improve cardiovascular endurance and muscular strength. Because it is high intensity, it can burn a significant number of calories in a relatively short amount of time while also engaging the lower body and core muscles.
The fast, repetitive movements may also help improve agility and balance.
High-intensity cardio exercise can help strengthen cardiovascular health by rapidly increasing heart rate. Many people also experience stress relief and mood-boosting effects from workouts that make them sweat heavily.
Compared with light walking, higher-intensity exercise may also be more effective for maintaining muscle mass and managing body fat.
Ultimately, Jun’s fitness routine appears to focus less on simple weight loss and more on balancing physical condition, energy and activity levels.
This article from Kormedi.com, Korea’s top health care and medical portal, is translated by a generative AI system and edited by The Korea Times.
