The broad issue examined in this literature review covers the importance of physical education and fitness in 21st-century education and how to motivate kids to be more active. Physical activity is defined as any movement that requires the skeletal muscles to function to create energy to be used (WHO, 20201). In education movement and energy is vital to the human body, its muscles, and their functions. For a skeletal muscle to function, energy needs to be produced. That energy comes from the oxygen (02) that we inspire and the carbon dioxide (C02) we expire. To inspire and expire we need a well-functioning heart that beats and produces blood to carry to our muscles and cells. The human body is a complex working machine; when fed well and forced to produce energy every day, it can typically function for a very long and healthy life.