Practicing past interview questions prepares candidates for the real UPSC interview by familiarizing them with the format and nature of inquiries they may encounter. This preparation helps in developing coherent responses and improves overall confidence. Simulating interview scenarios with peers or mentors allows candidates to refine their articulation and body language. Moreover, reflecting on past questions encourages candidates to think critically about their experiences and motivations, ensuring they present themselves effectively as future civil servants in the interview.