Lack of physical activity and unhealthy lifestyles is no stranger to the current millennial generation. so many of them are gaining weight until they are obese. One of the characteristics of obesity is an increase in body fat percentage. Physical activity is a good way to reduce body fat percentage. The aim of the study was to examine physical activity trends in the millennial generation to decrease body fat. It used a pre-posttest two treatment design, with 22 samples of obese women, and divided into aerobic dance group and Zumba group. It was conducted 3 times in a week along 12 weeks, with intensity of 65% -85% based on maximum heart rate. The result of this study showed that aerobic dance and Zumba had an effect on body fat percentage.