Final answer:
Endurance is improved through progressively changing physical and physiological demands. This involves increasing exercise intensity, duration, and frequency over time, following the principle of progressive overload.
Step-by-step explanation:
Endurance is shaped by gradually changing physical and physiological requirements in shaping procedures. To enhance endurance, athletes and individuals must engage in training programs that progressively increase the intensity, duration, and frequency of exercises. This concept is known as the principle of progressive overload, which is crucial in the development of cardiovascular and muscular endurance. It ensures that the body adapts to the stress of exercise by becoming stronger and more efficient. An example of this in practice is a runner gradually increasing their mileage each week to prepare for a marathon.