Which type of exercise primarily builds endurance?

Aerobic exercise is designed to improve cardiovascular endurance and overall stamina. This type of exercise engages large muscle groups and is performed at a steady, moderate intensity over an extended period of time. Examples of aerobic activities include running, swimming, cycling, and dancing. The primary advantage of aerobic exercise is its ability to enhance the efficiency of the heart and lungs, allowing the body to utilize oxygen more effectively during prolonged physical activities. As a result, individuals can sustain effort for longer durations, making aerobic exercise essential for building endurance.

In contrast, anaerobic exercise focuses on short bursts of high-intensity activity that do not rely primarily on oxygen for energy. This type of exercise is more effective for building strength and power rather than endurance. Isometric exercises involve static muscle contractions without movement, which also do not significantly enhance endurance but can increase muscle strength at a specific joint angle. Static stretching is primarily used for flexibility and does not contribute to endurance or cardiovascular fitness. Thus, aerobic exercise is the most suitable choice for building endurance.