High-intensity exercise training and the immune system: A new role of lactate

High-intensity exercise training is one of the effective strategies to improve the performance of athletes to achieve excellent physical fitness. In the meantime, a look at the history of sports immunology reveals the idea of window theory, which has been of great concern. According to the history of exercise immunology, high-intensity exercise training can suppress the immune system leading to respiratory infections. It has recently been shown that high-intensity exercise training has no effect on suppressing the immune system. In this review, a new perspective on the immune system and high intensity exercise training was presented to readers. Moreover, a new look at the history of high-intensity exercise training and the immune system and recent review studies was provided and some suggestions are offered.