What is the role of warm-up in a training session?

The role of warm-up in a training session is primarily to increase heart rate and muscle temperature. A proper warm-up prepares the body for more intense physical activity by gradually elevating the heart rate, which enhances blood flow to the muscles. This increase in blood circulation helps to raise muscle temperature, making muscles more pliable and reducing the risk of injury during subsequent exercises or sports activities. Additionally, a well-executed warm-up can improve flexibility and range of motion, allowing for better performance and efficiency during the main workout. This physiological preparation is crucial for optimizing performance and ensuring safety in physical activities.