What happens during the alarm stage of general adaptation syndrome?

During the alarm stage of general adaptation syndrome, the body perceives a stressor and initiates a rapid physiological response. The hypothalamus triggers the release of stress hormones, such as adrenaline and cortisol, leading to increased heart rate, heightened alertness, and energy mobilization. This prepares the body for a "fight or flight" response, enabling it to respond effectively to the immediate threat. This stage is characterized by a temporary increase in stress levels and physiological arousal.