Exercise positively impacts the immune response by promoting good circulation, which helps immune cells move more efficiently throughout the body. Regular moderate exercise can stimulate the production of immune-boosting cells, enhancing overall health and resilience against infections. However, overtraining or excessive vigorous exercise may lead to a temporary decline in immune function, making the body more susceptible to illness. Therefore, maintaining a balanced exercise regimen can optimize the immune system and improve overall health outcomes, highlighting the need for a well-structured fitness plan.