What is the primary purpose of warming up before exercise?

Warming up before exercise primarily serves to prepare the body for increased physical activity and to reduce the risk of injury. This preparation involves gradually raising the body's temperature and increasing blood flow to the muscles, which enhances muscle flexibility and readiness for strenuous activity.

Additionally, warming up helps to improve the efficiency of the cardiovascular system, ensuring that oxygen and nutrients are delivered to the muscles more effectively. This process also helps to get the body mentally focused on the upcoming exercise. By gradually easing into physical activity, the chances of strains, sprains, or other injuries are significantly minimized. Therefore, option B aligns perfectly with the essential goals of a warm-up routine.