1. What Did The Research Show

Intense exercise can temporarily weaken the immune system, making individuals more susceptible to illness. This "open window" of immunodepression can occur after prolonged or intense workouts.

2. What Happens in The Body

After intense exercise or stress, your body experiences changes in the number and types of white blood cells in your bloodstream. Lymphocytes tend to decrease rapidly after intense exercise but usually return to normal within a few hours. These changes in white blood cells can affect your immune system.

3. What Can You Do

Nutritional strategies, particularly carbohydrate intake before and during exercise, can help reduce the negative effects of intense workouts on the immune system. These strategies help maintain blood glucose levels and reduce the release of stress hormones, ultimately aiding in immune function. Additionally, consuming enough carbohydrates and protein after exercise can further support immune health.

> Recovery of the immune system after exercise (research)

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