Final answer:
Stress weakens our immune system through the release of cortisol, leading to negative health consequences.
Step-by-step explanation:
In short bursts, the stress response can have some favorable effects, such as providing extra energy, improving immune system functioning temporarily, and decreasing pain sensitivity. However, prolonged or chronic stress can lead to the extended release of cortisol which often comes at a high price. High levels of cortisol have been shown to weaken the immune system and are frequently observed among depressed individuals.