Fitness goals should be reassessed at least every 3-6 months to ensure they remain relevant and achievable. Regular reassessment allows individuals to reflect on their progress, adapt their strategies, and set new challenges that align with changing circumstances, such as fitness levels or personal interests. This process also helps maintain motivation, as tracking progress can inspire continued commitment to fitness routines. Additionally, it can highlight any plateaus or areas needing improvement, enabling a more tailored approach to achieving desired outcomes. Continuous evaluation ensures a dynamic and satisfying fitness journey.