Final answer:
Juanita's behavior is an example of a coping skill, specifically an emotion-focused coping strategy that includes exercise to reduce stress.
Step-by-step explanation:
Juanita's behavior of getting up early and going for a run to manage her stress is an example of a coping skill. This behavior falls under stress reduction techniques that include exercise as a common method to combat stress. By engaging in physical activity, Juanita is likely benefiting both her physical and mental health, making her more resilient to the adverse effects of stress as highlighted in the text. This proactive approach to managing stress is a positive example of an emotion-focused coping strategy, where the goal is to reduce the negative emotions associated with stress.