Modern advances in technology, computer games and TV have caused the present lifestyle to become more sedentary than previous generations. Moreover, with concerns about neighborhood safety and with physical education programs being cut out of school budgets, the classroom teacher is often given the additional responsibility of teaching the importance of fitness to his or her students. This article provides some useful guidelines for teaching physical fitness. For example, when transitioning between subjects, bring the students outside for a bit of physical activity; and when introducing an exercise, explain why the activity is important for overall health. Teaching students the importance of physical fitness is a crucial component of educating the whole child. An active fitness program helps produce healthier adults who will make physical fitness an essential part of their lifestyle.