Which of the following is an effect of regular aerobic exercise on the body?

Regular aerobic exercise primarily benefits cardiovascular health by significantly improving cardiovascular endurance. This form of exercise, which includes activities such as running, swimming, cycling, and brisk walking, increases the efficiency of the heart and lungs. When engaged in aerobic activities, the heart pumps more blood with each beat, enhancing blood circulation and oxygen delivery to the muscles and organs. Over time, this leads to a lower resting heart rate, improved stroke volume, and better overall heart health.

Although aerobic exercise may also indirectly contribute to other aspects of fitness, such as coordination and muscle strength, its most direct and established impact is on cardiovascular endurance. Increased flexibility and muscle strength are more closely associated with other forms of exercise, such as stretching routines and resistance training, respectively. Coordination is generally enhanced through skill-based activities or balance training rather than through the primary benefits of aerobic exercise alone.