Final answer:
Warming up before doing aerobics helps prepare your body for physical activity and reduces the risk of injuries.
Step-by-step explanation:
Warming up before doing aerobics is important because it helps prepare your body for the physical activity and reduces the risk of injuries. When you warm up, your muscles warm up, your heart rate increases, and blood flow to your muscles increases. This helps to increase flexibility, improve energy production, and prepare your body for more intense aerobic exercise.