Endurance is the ability of a person to extend his tenacity for doing some work, especially physical exercise. Athletes often tend to want to enhance their endurance for different athletic activities like biking and running. There are lots of training plans to help a person increase his endurance. However, endurance should be built up slowly to avoid any kind of injuries. If you wish to learn more about endurance, its impact, and how to enhance endurance read these endurance quotes.