Warming up the body helps in injury prevention by gradually increasing blood flow and muscle temperature, enhancing flexibility and reducing the risk of strains. A proper warm-up prepares the cardiovascular system for more intense activities, allowing for a safer increase in heart rate. Stretching and dynamic movements during warm-ups also improve range of motion in joints, which can prevent injuries. This process not only enhances physical performance but also primes the body mentally, promoting focus and readiness for exercise or competition.