When faced with stress, your sympathetic nervous system kicks in, prompting the release of stress-related hormones such as cortisol and adrenaline. These hormones create a burst of energy, preparing your body for a “fight or flight” situation. This response elevates your heart rate, enhances concentration, and increases alertness, allowing you to react to immediate dangers. Nonetheless, it can also lead to temporary discomfort, like trouble breathing and feelings of anxiety.