Final answer:
The body repairs itself and starts to normalize during the stage of resistance, with lowered cortisol release and normalized heart rate and blood pressure.
Step-by-step explanation:
The stage of stress you are describing, where the body begins to repair itself, releases lower amounts of cortisol, and sees a normalization of heart rate and blood pressure, is the stage of resistance. This stage follows the initial alarm reaction, which deals with the immediate response to stress, and precedes the stage of exhaustion, where extended stress can lead to serious health issues. During the stage of resistance, your body has adapted to the stressor to some extent but remains on heightened alert, ready to respond if needed, though with less intensity than the initial alarm reaction.