A positive byproduct of experiencing considerable stress is that you are better able to ward off illness because the stress increases the amount of adrenaline in the blood.

Adrenaline

A hormone and neurotransmitter released in response to stress, increasing heart rate, and energy as part of the fight or flight response.

Illness

A condition that affects an individual's physical or mental health, often characterized by specific symptoms and requiring medical attention or care.

Stress

Stress refers to the mental or emotional strain that arises from challenging or demanding circumstances.