What happens in the alarm phase of stress?

During the alarm phase of stress, the body reacts to a perceived threat—a response often referred to as the "fight or flight" reaction. In this phase, the body releases adrenaline and other stress hormones, which leads to several physiological changes. These changes can include an increased heart rate, heightened alertness, and a rush of energy, all meant to prepare the individual to face the challenge at hand.

This response is an evolutionary adaptation that helps individuals respond quickly to danger, enhancing their chances of survival. The surge of adrenaline can make a person feel energized and ready to take action, which is precisely why this answer is correct.

The other choices reflect states that do not align with the immediate physiological reactions associated with the alarm phase. For example, body repair and lethargy relate to later stages of stress and recovery, while feelings of relaxation and calmness are not characteristic of being under acute stress.