Which factor does Tina identify as contributing to her difficulty sleeping?

Tina identifies upcoming examinations as a significant factor contributing to her difficulty sleeping. This suggests that anxiety or stress related to the pressures of academic performance can disrupt her normal sleep patterns. The anticipation or worry about exams can lead to overthinking and restlessness, making it challenging for her to relax and fall asleep. Stress and anxiety are well-documented causes of sleep disturbances, and in Tina's case, the stress tied to her responsibilities and concerns about her performance is a prevalent issue that many students face. Understanding this connection can help in developing coping strategies to manage stress and improve sleep hygiene.