Amelia takes her 4-year-old students outdoors to play for 20 minutes three times a day. She leads the children in games and activities and gives them free time on the playground equipment. On rainy days, she guides them in activities that allow them to dance or march to music, stretch, and play games with balls and gym equipment in the big room down the hall. What health concern is Amelia addressing?
Communicable diseases
Lead poisoning
Asthma
Obesity