This study aims to confirm the importance of behavior habit and exercise, especially leg exercise in obese. Out of 889 people, We divided Group A 50 (BMI<18.5), Group B 210 $(18.5{leq}BMl<23)$, Group C 202 $(23{leq}BMI<25)$, Group D212 $(25{leq}BMI<30)$ and Group 1215 (30<BMI). We measured each arm, leg, abdomen muscle circumference using Bioelectrical Impedance Analysis(BIA). We Investigated whether ratio of arm and abdomen muscle circumference to leg has difference by statistics among each groups. Statistical analysis was peformed by using SPSS program. The lager BMI group, ratio of arm muscle circumference is significantly higher than(P<0.05). But, in case of total 30s C-D groups, 40s C-D groups, 50s B-C-D groups, in case of woman 40s B-C groups and C-D groups, in case of man 10s group was not significantly. The lager BMI group, ratio of abdomen muscle circumference is significantly higher than(p<0.05). But, in case of total 20s B-C groups, 30s B-C groups and C-D groups, 50s B-C-D groups, in case of man 10s group was not significantly. These results suggest that exercise and activity of lower limbs is more needed in the field of obesity treatment and prevention.