Actress Shin Se-kyung revealed her secret to not gaining weight no matter how much she eats.
Recently, Shin Se-kyung appeared on YouTube’s Fairy Jaehyeong and talked about her current situation. Shin Se-kyung returned from living in Paris for 40 days last year. When Jeong Jae-hyung asked why she chose Paris, Shin Se-kyung explained, “I feel close to (Paris), and I really like eating, and I like Parisian food.”
When Jeong Jae-hyung asked, “So do you keep exercising to stay in shape?” Shin Se-kyung emphasized, “That’s right. That’s why I exercise really, really, really hard.” He then said about running, “I went to Latvia to film a movie, and I stayed there for three months and started running while filming. At the time, everyone, including the actors and staff, ran hard. The area was all flat, so it was good for running, so I started running.”
Meanwhile, Shin Se-kyung posted a vlog about her trip to Paris late last year. In the video, Shin Se-kyung went to the gym to work out after shopping for dinner. Shin Se-kyung revealed her exercise routine, saying, “It’s really annoying, but the exercise I try to do every day is the plank.”
If you need to maintain your weight but find it difficult to reduce your intake like Shin Se-kyung, increasing the frequency and intensity of exercise may be helpful. Calories consumed must be greater than calories consumed to lead to weight loss or maintenance. Dieting through exercise increases the rate of fat loss and reduces muscle loss compared to a diet that only reduces intake. Even if you lose the same amount of weight, exercising will keep your body toned and in shape.
Let’s find out the specific effects of running and planking that Shin Se-kyung practiced to maintain her body.
Running, out of breath, but conversationable at a reasonable level
Running, practiced by Shin Se-kyung, is a representative aerobic exercise that is effective for weight loss. Running for 30 minutes can burn about 300 to 500 kcal. Running burns more calories than walking or cycling for the same amount of time. Running also increases the body’s ability to use fat as an energy source. This is because running is a moderate-intensity exercise that increases muscle mitochondrial activity. This increases not only your ability to use fat as an energy source, but also the rate at which your body burns fat at rest. You can understand that the body itself adapts to use fat better.
It is best to keep the running intensity at a level where you can breathe easily but still be able to have a conversation. It is about 60-75% of maximum heart rate. The best time is to run for 40 to 60 minutes, but if that is difficult, we recommend running for at least 30 minutes. The appropriate frequency is 3 to 5 times a week. It is better to run frequently and consistently than to run intensely occasionally.
However, if you are a beginner, you should prioritize maintaining the pace and steady breathing over speed. If you speed too fast or run for a long time, you may get injured. If it’s your first time running, start by running 2-3 km slowly. Choose appropriate running shoes because repetitive impacts may be applied to your knees, ankles, and hip joints while running. Stretching before and after running is essential.
Plank strengthens your core and increases muscle endurance
Plank is a representative core exercise that can be done with your body. You can practice the plank movement as follows. First, lie down on the floor, then bend your elbows and lift your body. Support your body with both arms and feet, and pull your toes toward your shins. Keep your elbow angle at 90 degrees and your elbow and shoulder in a straight line.
The main effect of planks is core muscle stabilization. If you do plank every day, you will feel like your body is firmly held without putting any effort on it. It helps your spine stand up straight and your shoulders, pelvis, and feet are aligned correctly. This reduces the incidence of back pain. As you build muscle endurance, your back hurts less even when you stand for a long time, and your posture doesn’t break down easily when running or lifting weights.
The weight loss effect of planks themselves is not significant. However, it changes the quality of weight loss by increasing efficiency when performing other exercises. For example, during the same run, posture is maintained well, energy consumption is high, and the risk of injury is reduced.
Meanwhile, maintaining plank posture correctly is more important than holding on for a long time. Avoid excessively arching your back or lifting or sagging your buttocks.
date: 2026-02-12 12:59:00