Exercise Makes Me Ill

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This phenomenon is often referred to in sports science as the "Open Window" theory, where the immune system is temporarily suppressed following intense physical exertion, leaving you vulnerable to pathogens. As we age, the recovery of that "window" can slow down due to immunosenescence, the gradual decline of the immune system's efficiency. !!The Post-Exercise "Open Window" During and immediately after exercise, the body releases stress hormones like cortisol and adrenaline. While these help you power through a workout, they also suppress the activity of T-cells and Natural Killer (NK) cells. In younger individuals, the immune system bounces back in hours. With age, this suppression can last longer, creating a 24 to 72-hour period where a simple virus you’d normally fight off becomes a full-blown cold. Respiratory Focus: Exercise often involves heavy mouth-breathing, which bypasses the nose’s natural filtration and humidification system, drying out the mucosal lining of the throat and lungs and making it easier for viruses to take hold.
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