The University of Pennsylvania, in collaboration with CHOP, is conducting a study to find out more about how behaviors (eating, physical activity, sleep) and genes affect growth and development in children. Participants will include children, ages 5 to 7, and their mothers.Families will be asked to participate in a screening visit and 3 study visits over 1 year. Child participants will be asked to:

• Eat dinner in our Center (visit 1);
• Have their physical activity and sleep assessed over 14 days with a wrist-work activity monitor;
• Have a saliva sample collected (visit 2), and
• Have body measurements taken (visits 2 and 3).

Mothers will be asked to complete questionnaires throughout the study. Participants will be compensated for their time.