Gradual progression in training helps prevent injury by allowing the body to adapt to increasing levels of stress and demands. This progressive overload principle involves incrementally increasing weights, duration, or intensity of workouts, which helps strengthen muscles, tendons, and ligaments. Sudden increases in activity can lead to overuse injuries, muscle strains, or joint issues. Training programs should include warm-up, cool-down, and rest periods, enabling recovery and reducing the risk of injury while enhancing overall performance and fitness gains.