The body adapts to a consistent workout regimen through a process called physiological adaptation. This includes improvements in muscular strength, endurance, and cardiovascular fitness as the body becomes accustomed to the stress of regular exercise. Muscle fibers undergo adaptations, increasing in size and strength, while cardiovascular adaptations enhance the efficiency of the heart and lungs. Additionally, neural adaptations improve coordination and motor skills. These changes occur over time, allowing individuals to perform at higher intensities or for longer durations. Consistency in training is key to achieving and maintaining these adaptations.