Which exercise is primarily focused on improving cardiovascular endurance?

Running is primarily focused on improving cardiovascular endurance because it elevates the heart rate and requires sustained aerobic activity over a period of time. This type of exercise promotes the efficiency of the cardiovascular system, enabling the heart and lungs to work more effectively in delivering oxygen to the body during prolonged exertion.

While squats, deadlifts, and bench presses are excellent strength-training exercises that contribute to muscular strength and hypertrophy, they are typically not categorized as cardiovascular workouts. These resistance exercises focus more on muscle engagement and strength rather than sustained cardiovascular activity, which is essential for building endurance. Running, on the other hand, can be performed continuously for extended periods, making it a quintessential endurance exercise that enhances aerobic capacity and stamina.