To establish the social determinants of health as predictors of healthy physical condition in schoolchildren between 12 and 18 years of age in Pasto city. Methodology: This is a descriptive - transversal study with a correlation phase. 322 students from public and private schools in Pasto city were evaluated. The sociodemographic survey was used to investigate the individual and social determinants, and the Alpha-fitness battery was applied based on evidence to evaluate the physical condition. The statistical analysis was performed in the SPSS program, version 24. Results: Eight out of ten students in the city of Pasto have an unhealthy physical condition and this maintains a close correlation with sex and eating habits, therefore the prognosis This research found that in this population men have a 89.5% probability of having an unhealthy physical condition, for their part in women that probability is 78%, this is because in this population there are no good eating habits, in conclusion men are more predisposed to have an unhealthy physical condition in the future. Conclusions: The predictive factor and the goodness of the model of this research determined in the prognosis that an individual of male sex in this population has a probability of 89.5% of having an unhealthy physical condition, while in a woman that probability is of 78%.