The body's immune response to exercise functions to enhance overall health. Regular physical activity stimulates the circulation of immune cells, which helps to identify and eliminate pathogens more effectively. Moderate exercise can lead to temporary increases in immune functions, improving resistance to infections. However, intense or prolonged endurance training can have the opposite effect, temporarily suppressing the immune system. Therefore, a balanced exercise regime supports immune function while minimizing the risk of illness, promoting long-term health benefits.