The role of willpower in sticking to fitness routines is significant, as it helps individuals resist immediate temptations in favor of long-term health goals. Willpower is the mental strength that enables a person to stay focused and committed, especially when faced with challenges like fatigue or cravings. Maintaining a consistent fitness routine often requires effort and sacrifice, which can be bolstered by strong willpower. Moreover, setting realistic goals and celebrating small victories can enhance willpower, making it easier to develop long-lasting habits that contribute to fitness success and overall well-being.