Self-efficacy refers to an individual's belief in their ability to achieve specific fitness goals. This concept is vital for fitness motivation, as a strong sense of self-efficacy enhances persistence, resilience, and commitment to exercise. When individuals believe they can succeed, they are more likely to set higher goals and engage in challenging workouts. Increasing self-efficacy can be achieved through positive experiences in physical activity, skill mastery, and social support, ultimately leading to improved workout adherence and outcomes.