I actually dealt with this today at camp. In the future I am going to compare the weekly menu with the weekly activity schedule. Today we had three groups of kids going on a six hour hike. Breakfast was sugar cereal, yogurt, and banana bread. When I sat down with my own kids and thought about what they were eating and where they were going, I thought how hungry they would be in 2 hours. I went to the camp director and requested that they bring extra snacks with their lunches for the kids. They came back tired and starving but made it to the top!