Which principle emphasizes the gradual increase of overload in a fitness program?

The principle that emphasizes the gradual increase of overload in a fitness program is the Principle of Progression. This principle focuses on the importance of incrementally increasing the intensity, duration, or frequency of exercise to achieve continued improvements in fitness. It is essential because it helps prevent plateaus and reduces the risk of injury. By systematically and progressively increasing the demands placed on the body, individuals can enhance their physical capabilities and achieve their fitness goals more effectively and safely.

In the context of fitness training, understanding the Principle of Progression allows individuals to set realistic milestones and adapt their programs to match their evolving fitness levels. This emphasis on gradual changes ensures that the body has adequate time to adapt, ultimately leading to long-term improvements.