This document discusses the importance of nutrition and lifestyle factors in supporting school achievement and overall health and well-being. It defines health as a state of complete physical, mental and social well-being, not just the absence of disease. It notes that eating breakfast, choosing whole grains over refined grains, limiting caffeine and sugar, eating fruits and vegetables, staying hydrated, exercising regularly, and getting adequate rest are all important for physical and mental health as well as academic performance. Regular physical activity is highlighted as it reduces stress and improves mood, sleep quality, and disease risk.