Which category is NOT a symptom of stress overload?

Joyfulness is not considered a symptom of stress overload because, in contrast to anxiety, fatigue, and trouble concentrating, joyfulness reflects a positive emotional state. When under stress, individuals often experience negative feelings and symptoms that can manifest physically and mentally. In stressful situations, people may feel anxious due to overwhelming pressures, experience fatigue as a result of constant worry or lack of sleep, and struggle with concentration because their minds are preoccupied with stressors. Joyfulness, however, indicates a sense of well-being and contentment, which is typically absent during periods of high stress. This makes it clear that joyfulness is fundamentally different and does not fit into the framework of stress-related symptoms.