Abstract: This study using the secondary data aims to determine the relationship between the independent variables that included gender, body mass index for age (BMI-for-age), breakfast habits, physical activity, and nutrients intake (energy, carbohydrates, proteins, and fats) with the dependent variable that included body fat percentage (body fat percentage) in adolescents. This is a cross-sectional study that conducted on 131 students of SMAN 39 Jakarta in 2019.