Endurance training is the act of exercising to increase endurance. Endurance training is essential for a variety of endurance sports. The sport also improves cardiovascular endurance and muscular strength. Exercise often focuses on improving muscle strength, endurance and flexibility. Swimming builds endurance, muscle strength, and cardiovascular fitness. Kalibak possesses incredibly high levels of superhuman strength, endurance, and durability. The purpose was to test candidates' endurance, stamina, willingness to endure and mental resolve. He also has heightened strength, speed, agility, reflexes, coordination, balance, endurance, and eyesight. These qualities include good eyesight, coordination, strength, knowledge, endurance, or bravery. Athletes are often concerned about endurance and intensity of exercise. It is an effective exercise for building both endurance and explosive power. Reliability of the motorcycles used for endurance racing is paramount. She is passionate about endurance horse racing. They allow muscles to work for longer periods of time resulting in greater endurance. Other tests for physical performance showed results such as increased endurance and power.