Key indicators of overall fitness include cardiovascular endurance, muscle strength, flexibility, and body composition. Cardiovascular endurance is often assessed through aerobic capacity tests, which measure the ability of the heart and lungs to supply oxygen during prolonged physical activity. Muscle strength can be evaluated using resistance tests, while flexibility is determined through stretching assessments. Body composition analysis provides insight into the proportion of fat and lean mass. Together, these indicators offer a comprehensive picture of an individual's fitness level and help inform training and health decisions.