The real power of being fit is in the ability of the cardiovascular system to perform at high levels throughout the day. The process of becoming fit is inherently tied to the heart’s ability to pump blood and oxygen to the organs, tissues, muscles, and extremities during periods of peak demand. The conditioning process is a daily effort requiring activity and movement. The training process is the planned activity that is designed to stress the system intentionally over time and at a prescribed intensity. They are two sides of the same coin and will be highlighted in this article.