Writing practice is essential in UPSC Mains preparation as it sharpens a candidate's articulation of thoughts and enhances writing speed and clarity. Through regular writing exercises, aspirants can develop effective structuring of answers, ensuring they address the questions directly. This practice aids in improving grammar and vocabulary, which contribute to better scores. Furthermore, writing under timed conditions helps candidates manage their time effectively during the exam. Drafting answers to previous year questions or sample papers improves familiarity with the expected response format, ultimately building confidence for the actual test.