The increase in obesity among obese boys is more than double the number of girls. There are a number of studies that encourage people to exercise core movement to tackle obesity. However, it was often recommended to work together instead of just doing a core workout. School life in middle school is currently running short of time to participate in physical activities due to important learning centered on major curricular learning. This scarcity is affecting students' obesity as well. I want to try to create a method for students who can prevent obesity and prevent excessive exercise. The students conducted hands-on exercises to exercise their workout regimen due to movement time and economic difficulties for exercise. Fifteen people were chosen for 30 overweight boys, and 15 people did exercise and 15 people did not exercise. The frequency of exercise was carried out for more than 80 minutes a week. The core exercises were examined according to the exercise of body fat, a decrease in body weight, and increased muscle mass. Students participating in the core exercises showed statistically significant differences in body configuration and health. Students who did not participate in the survey showed better physical composition and health stress, or no changes in the level of statistical significance. We aim to guide ourselves through the exercise of effective exercise, focusing on learning activities and physical activities.