We set the challenge for the children to run or walk a mile a day. Each morning the children walked and ran around the perimeter of the school field for 15 minutes, which was approximately 5 laps, or 1 mile. The children enjoyed the activity and were encouraged to run or walk with a friend. If running, they needed to be able to hold a conversation to ensure they were not running too fast. Most children combined some jogging with some walking.