The second edition of Preventing Childhood Obesity in Early Care and Education Programs is the new set of national standards describing evidence-based best practices in nutrition, physical activity, and screen time for early care and education programs. The standards are for ALL types of early care and education settings – centers and family child care homes. This manual provides the foundational knowledge and reasoning that supports obesity prevention standards in early care and education settings. Use this manual to understand rationale and more comprehensive background information pertaining to nutrition and physical activity standards.