Adjusting an exercise regimen can contribute to longevity by ensuring that workouts are aligned with the individual's evolving fitness level, goals, and bodily needs. Regular adjustments help prevent plateaus, maintain motivation, and reduce the risk of injury through proper recovery and variation. By incorporating different modalities like strength training, cardiovascular exercises, and flexibility work, individuals can improve overall fitness and health, ultimately enhancing their lifespan. A tailored approach encourages continuous progression, leading to a sustainable and active lifestyle.