Antonio García-HermosoIgnacio Hormazábal‐AguayoJacinto Muñoz‐PardezaJosé Francisco López‐GilRodrigo Yáñez-SepúlvedaJacqueline Páez‐HerreraYasmín Ezzatvar2026-03-222026-03-22202510.1016/j.acap.2025.103151https://doi.org/10.1016/j.acap.2025.103151https://andeanlibrary.org/handle/123456789/77939Our findings suggest that engaging in morning physical activity before starting classes increases positive emotions (such as happiness, contentment, and fun) in children from socioeconomically disadvantaged backgrounds, particularly among boys. This improvement in emotional well-being could enhance their mood and readiness for learning.enPhysical activityMoodPsychologyDisadvantagedClinical psychologyMorningDevelopmental psychologyPedometerMedicineImpact of a Before-School Physical Activity Program on Children's Subjective Well-Being: Secondary Findings From the Active-Start Studyarticle