Which type of exercise primarily targets the cardiovascular system?

Aerobic exercise primarily targets the cardiovascular system due to its nature of sustained, rhythmic activities that increase heart rate and promote endurance. This type of exercise includes activities like running, cycling, swimming, and dancing, which require the heart and lungs to work efficiently to supply oxygen to the muscles over a prolonged period. By engaging in aerobic activities regularly, individuals enhance their cardiovascular health, improve circulation, and increase overall stamina, making it a foundational component of fitness programs aimed at boosting heart health and endurance.

In contrast, strength training focuses more on building muscle mass and strength rather than primarily improving cardiovascular function. Flexibility training is aimed at improving the range of motion in the joints and does not significantly elevate heart rates. Plyometric exercise combines strength and speed, often with explosive movements; while it can elevate heart rate, its primary emphasis is not on sustained cardiovascular conditioning as it is with aerobic exercise.