The main components of physical fitness include cardiovascular endurance, muscular strength, muscular endurance, flexibility, and body composition. Cardiovascular endurance refers to the efficiency of the heart and lungs during prolonged activity. Muscular strength pertains to the maximum force exerted by muscles in a single effort, while muscular endurance reflects the ability to perform repeated contractions over time. Flexibility indicates the range of motion in joints, and body composition measures the ratio of fat to lean mass. Together, these components contribute to overall health and functional ability.