摘要:Along last decades, Physical Education had different objectives, but now is directed mainly to a constructivist education and psychomotor development, using the movement. In parallel, population in general and children, in particular, is becoming more fat and suffering of obesity and associated diseases. The mainly causes are low physical activity and inadequate diet. Physical activity and diet have been used only as therapy, but we think that they must be considered mainly as prevention, starting at childhood with information and incentive to take a health diet and practice of physical activities, provided by the parents and physical educators at school.