Proper warm-up exercises are essential for preparing the body for physical activity. They typically include light aerobic activities, such as jogging or jumping jacks, to increase heart rate and blood flow to the muscles. Dynamic stretches, like arm circles and leg swings, help improve flexibility and range of motion, reducing the risk of injury. A good warm-up should last about 5 to 10 minutes and gradually increase in intensity. It is important to focus on the specific muscle groups that will be used during the main workout. This approach ensures that the body is adequately prepared for more strenuous activities.