RESUMEN
Objective: to determine the level of physical activity (NAF), screen time (TP) and sleep habits (HS) in Chilean adolescents, during the COVID-19 quarantine. Methodology: descriptive and correlational study with a sample of 196 adolescents from different regions of Chile. Results: In general, the most active students did not exceed the PD recommendations and reported higher values of sleep quality and total score compared to those who did not meet both. Conclusion: the study indicates that, under a quarantine context, the variables are more altered in the female gender, in addition, the need to jointly analyze and monitor the NAF, TP and HS is evident to avoid disorders related to the health of the males. POST-COVID-19 students. © Copyright: Federación Española de Asociaciones de Docentes de Educación Física (FEADEF)