What is the primary purpose of a warm-up before exercise?

The primary purpose of a warm-up before exercise is to prepare the body for physical activity. A warm-up gradually increases the heart rate, improves circulation to the muscles, and enhances oxygen delivery, which helps to increase body temperature. This physiological change is crucial as it reduces the risk of injury by making muscles and joints more flexible and pliable. Additionally, it can enhance performance by improving reaction times and the efficiency of muscle contractions.

While socializing with teammates might occur during this time, it is not the main goal of a warm-up. Similarly, a cool-down is a separate process after exercise aimed at bringing the heart rate and blood flow back to normal. Increasing muscle mass is a long-term goal of strength training and is not specifically addressed by the warm-up process. Thus, the primary focus of warming up lies in preparing the body for the demands of exercise.