You used to love physical activity - the more intense the better. What has become of this urge? Picture a big pot filled with soup - the biggest pot you can imagine. Stirring that pot, so that soup from the very bottom mixes with the soup on top, is what exercise does for you. A good balance between aerobic and anaerobic exercise is ideal. This process is not only satisfying physically, but is also necessary for a healthy mind. With so much energy brewing inside of you, regular physical release keeps your mental processes in check. Think about it.