Exercise triggers a crucial immune response in nearly all scenarios. Each session prompts the movement of immune cells into the bloodstream, primarily NK cells, T cells, and B cells. After exercise, these cells return to their origin tissues. This effect is intensity- and duration-dependent, meaning harder and longer workouts lead to greater immune cell mobilization.This functions as immune surveillance. Exercise stresses the body, increasing heat, heart rate, and adrenaline. The body misinterprets this as an imminent microbial attack, releasing the cells best equipped to fight said microbes – in this case, NK cells and T cells. Over time, this repeated immune cell mobilization creates a robust immune surveillance system. Simultaneously, muscles release proteins called cytokines, which help maintain immune function. Consequently, consistent exercise promotes a strong immune system and healthy muscles, potentially reducing the likelihood and severity of infections. This is the central hypothesis: exercise bolsters immunity.

https://invidious.flokinet.to/watch?v=gQRWduXYTfE

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