What physiological condition does a warm-up engage to enhance performance?

A warm-up primarily engages the cardiovascular system, which plays a crucial role in preparing the body for physical activity. During a warm-up, the heart rate increases, and blood flow to the muscles is enhanced. This increase in blood circulation not only delivers more oxygen and nutrients to the muscles but also helps to remove metabolic waste products more efficiently.

As the cardiovascular system becomes more active, the body temperature also rises, which helps to improve muscle elasticity and flexibility. This prepares the muscles and joints for more intense activity, reducing the risk of strains and injuries. Warm-ups also have a positive effect on the respiratory system, but the primary focus is on optimizing cardiovascular function to support enhanced performance during exercise.