What best describes a program cycle in exercise regimen?

A program cycle in an exercise regimen is best described as a series of workouts with varied intensities. This concept involves structured phases or cycles that strategically vary the training volume, intensity, and specific goals over a set period of time. By doing so, the program can effectively prevent plateaus, enhance performance, and allow for recovery. The incorporation of varied intensities helps engage different muscle fibers, promotes adaptations in strength and endurance, and reduces the risk of overuse injuries.

Other options do not encompass the full scope of what a program cycle entails. A specific dietary plan focuses solely on nutrition, a one-time workout plan lacks the ongoing development necessary for adaptation, and a warm-up routine is just a preparatory phase rather than the comprehensive cycle of varied workouts.