Fitness generally refers to the state of being physically healthy and fit, often involving aspects such as strength, endurance, flexibility, and overall well-being. It involves both physical fitness and mental fitness. Physical fitness involves attributes such as cardiovascular endurance, muscular strength, flexibility, and body composition. Mental fitness includes aspects like cognitive function, emotional well-being, and stress management. Overall, fitness is achieved through regular physical activity, proper nutrition, adequate rest, and a healthy lifestyle.