The role of a warm-up in preventing injuries during exercise is crucial, as it prepares the body for physical activity. A proper warm-up increases blood circulation, which enhances muscle temperature and flexibility, making them less prone to strain. It also ramps up the heart rate, ensuring that the cardiovascular system is ready for heightened demands. Dynamic stretches and mobility exercises during the warm-up help to engage joints and muscles, reducing the risk of injury. Overall, warming up serves as a preventive measure, creating a safer environment for productive exercise sessions.