Being able to keep going for a long time.
If your heart, lungs and blood circulation are in good shape you are half way to becoming fit. Training these systems by raising your heart rate and keeping it elevated for 20, 30 or 40 minutes is the key to developing stamina or endurance. All Aerobic training or Cardio Vascular training will develop these systems to make them more efficient. The human body has the remarkable ability to adapt to progressively harder bouts of exercise thereby improving the ability to perform a set work output.
Most athletes look at developing a stamina "base" before looking to improve strength or speed. The big advantage of improving stamina by this steady paced activity is that it also helps burn excess fat. If you have no sound base then every other topic in this section will not be as effective as it could be.
Stamina is achieved by any activity that is continued for long periods at a steady pace. The term Aerobic simply means "with oxygen". Running, jogging or walking can be an excellent way of improving your stamina. However, for those who have joint problems then variations must be sought such as swimming, cycling or rowing.