Progressive overload is a fundamental principle in strength training that involves gradually increasing the demands on the body to stimulate muscle growth and strength adaptations. This can be achieved by increasing the weight, repetitions, or intensity of exercises over time. By consistently challenging the muscles, the body adapts by becoming stronger and more efficient. This method not only enhances performance but also helps prevent plateaus in training progress. Proper implementation of progressive overload is essential for those looking to achieve their fitness goals effectively.