[Tony Sousa]

While intense exercise has various health benefit, prolonged sessions of high-intensity exercise lasting more than 1.5 hours can temporarily suppress the immune system, leading to a phenomenon called Post-Exercise Immumosupression (PEIS).

PEIS is a physiological response to large training loads or strenuous exercise which usually happens due to a rise in stress hormones such as adrenaline and cortisol.

As such, if you are looking to boost your immunity this winter, it is recommended that you limit your hard training sessions and engage in more moderate-intensity exercise that can support your immune system, rather than overload it.

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