Participation in physical activity can lead to a healthy lifestyle for primary school students. Caspersen, Powell, and Christenson (1985) define activity as "any bodily movement produced by skeletal muscles that results in energy expenditure... In daily life, [it] can be classified into work, sports, conditioning, domestic or otherwise". Physical activity is directly related to a healthy lifestyle. A healthy lifestyle “is a state of complete physical, mental and social well-being and not simply the absence of disease or infirmity” (World Health Organization, 1948). With the rapid decline in healthy lifestyles (Fleeton, 2011), the demand for students to participate and learn the importance of physical activity by catching bad habits before they occur. This essay will argue that physical activity has a significantly positive effect on the lifestyle of primary school students, highlighting that physical activity improves physical fitness and behavioral skills, promotes fitness outside the classroom and has a positive impact on classroom performance. Physical activity also has a positive impact on students' psychological and physiological factors. Physical activity improves students' fitness, health and behavior, encouraging them to stay fit outside of the classroom. Are students provided with plenty of physical, structured and social opportunities? Warburton and colleagues define physical fitness as “a physiological state of well-being that allows one to meet the demands of daily life or provides the basis for sports performance, or both. Health-related physical fitness involves the components of physical fitness related to health status” (2006). Students are socially provided time for physical activity during free time... middle of paper... daily activities, including their effort and ability to contribute to academic performance. As a result of exercise, student energy balance is also linked to encouraging physical fitness outside of the classroom due to behavioral changes in their energy expenditure. Students' risk of obesity decreases thanks to physical activity that changes their body composition. Beneficial changes to students' immune systems result from their interaction with structured and social exercise. This reduces the risk of falling ill for students, which can also affect their performance in class as they will not miss out on vital learning time. In conclusion, physical activity in schools is beneficial for student well-being, academic performance, and both psychological and physiological factors. Physical activity can lead to a healthy lifestyle for primary school students.