Mock interviews are invaluable for UPSC candidates as they simulate the actual interview process, allowing aspirants to practice their responses to potential questions. They provide an opportunity to receive constructive feedback on body language, communication skills, and content clarity. Furthermore, these interviews help alleviate anxiety and build confidence, enabling candidates to present themselves more effectively. Role-playing different scenarios encourages participants to think critically and articulate their thoughts clearly, which is essential for succeeding in the real interview.