Center eligibility | 1. A full-day center (offering ≥7 h of care/day) |
2. At least one classroom enrolling children aged 3 | |
3. Agreement to modify center physical activity and nutrition policies | |
4. Agree not to participate in other health-related studies. | |
Child eligibility | 1. Enrollment in a study center |
2. Age 3 years at baseline | |
3. One child per family | |
4. Parental consent |