In your opinion, do skinny people need to exercise? What about children?

Um yeah everyone needs to exercise whether they be skinny,fat, young, or old. It helps everyone get into better shape either way. A gym really isn't that expensive but you can do cardio and callisthenics's. Basically cardio would consist of stuff like biking, running, swimming, whatever your in to. Callistenic's are like pushups, situps, jumping jacks, a combination of the two are easy ways people can stay healthy.