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Obesity is one of the risks of various diseases and can reduce the beauty of the body, especially mothers. From the survey data conducted by many mothers always complained by the name of gaining weight because they did not exercise while the food patterns were also not regulated they tend to prefer fast food (jungfood). Therefore one type of exercise used to reduce body fat is to do aerobic exercise. The success of decreasing body fat can be seen with aerobic exercise training models through the Circuit training model and body language training. In addition, it can also be seen from the consistency of exercise, adequate diet and rest, so that instructors need innovation or variation by applying appropriate training models. The research method used in this study is the experimental method. This research was divided into two treatment groups namely the experimental group and the control group. The two groups were tested for their initial conditions, before being given different treatments. In the experimental group the implementation uses the circuit training model, while the control group uses the body language training model in the implementation. At the end of the treatment the two groups were measured using tests and measurements using a skinfold caliper from Ismaryati (2006: 90). The data analysis technique in this study used a 2x3 factorial design variance analysis (ANAVA) technique at α = 0.05. With the normality test (lilliefors test) and the Homogeneity Variance test (with Bartlet test). The results of this study indicate that: 1. There are differences in the effect of the application of the circuit training model and the body language training model on decreasing body fat (Sig. 0.013 <0.05). 2. There is a difference in the effect of gymnastics mothers who have underweight, normalweight (ideal) weight, and overweight weight on the reduction in body fat (Sig. 0.000 <0.05). 3. There is no interaction of influence between exercise model and body weight on body fat reduction (Sig. 0.959> 0.05). Keywords: Aerobic Gymnastics Circuit Training Model, Aerobic Gymnastics Body Language Training Model, Body Fat Decrease